Firefly Fact Friday – Winning the reproductive game

“Although [Photinus fireflies] mated only once each night, it turned out that both sexes took many different mates over their two-week adult lives. I understand how this might seem like an esoteric bit of knowledge. But while gallivanting males were no surprise, the discovery that firefly females had multiple mating partners had huge implications…. What difference does all this make? Quite a bit, as it turns out. Widespread female promiscuity challenged everything we thought we knew about sexual selection…. Discovery of female infidelity opened an exciting new frontier known as postcopulatory sexual selection. Over the past two decades, behavioral ecologists have unearthed some surprising strategies that animals use during and after mating to win this ongoing reproductive game.” p. 47

To find out how female fireflies engage in postcopulatory sexual selection, and what males do to increase their chances of siring offspring, read Silent Sparks! 

Silent Sparks: The Wondrous World of Fireflies
Sara Lewis

LewisFor centuries, the beauty of fireflies has evoked wonder and delight. Yet for most of us, fireflies remain shrouded in mystery: How do fireflies make their light? What are they saying with their flashing? And what do fireflies look for in a mate? In Silent Sparks, noted biologist and firefly expert Sara Lewis dives into the fascinating world of fireflies and reveals the most up-to-date discoveries about these beloved insects. From the meadows of New England and the hills of the Great Smoky Mountains, to the rivers of Japan and mangrove forests of Malaysia, this beautifully illustrated and accessible book uncovers the remarkable, dramatic stories of birth, courtship, romance, sex, deceit, poison, and death among fireflies.

The nearly two thousand species of fireflies worldwide have evolved in different ways—and while most mate through the aerial language of blinking lights, not all do. Lewis introduces us to fireflies that don’t light up at all, relying on wind-borne perfumes to find mates, and we encounter glow-worm fireflies, whose plump, wingless females never fly. We go behind the scenes to meet inquisitive scientists who have dedicated their lives to understanding fireflies, and we learn about various modern threats including light pollution and habitat destruction. In the last section of the book, Lewis provides a field guide for North American fireflies, enabling us to identify them in our own backyards and neighborhoods. This concise, handy guide includes distinguishing features, habits, and range maps for the most commonly encountered fireflies, as well as a gear list.

A passionate exploration of one of the world’s most charismatic and admired insects, Silent Sparks will inspire us to reconnect with the natural world.

For more information, visit Sara Lewis’s website! To check out some cool firefly videos, find her on Vimeo.

Happy Father’s Day with Donald Kroodsma

In Listening to a Continent Sing, Donald Kroodsma tells the story of the ten-week, ten-state cross-country bike tour he took with his son, David, to listen to the different birds that live all over the United States. In celebration of Father’s Day, here is a sampling of one of the many entries. Be sure to visit the author’s companion website to hear the birds for yourself.

Pacific

On July 7, Day 65 of the journey, Kroodsma and his son prepared to leave Dixie Summit for Dayville, Oregon.

Back at the campsite I find David eating breakfast. I join him, and we gradually pack up and ready our departure. “July 7, 7:52 a.m.,” I announce into my recorder. “We’re about the drop down off Dixie Pass, biking downhill for 53 easy miles beside the John Day River, dropping almost 2000 feet to where we’ll spend the night as guests at the Presbyterian church in Dayville.” To David’s playful, muted strains of “happy birthday to you,” we mount our bikes, aim them west, and begin coasting…. All around us are those exhumed bits and pieces of oceanic islands that were scraped off the Pacific plate…. Dayville arrives quickly, and with permission kindly granted we’re soon camped inside the church. After a quick visit to the nearby general store, David prepares a feast fit for any birthday, topped off with two brownies laden with 57 candles, enough to create a conflagration (wisely, I note, he has a bucket of water nearby, just in case). “Happy birthday, Pops,” smiles David as he unveils my birthday present: a second Super Soaker water cannon to match my Father’s Day present, which David still carries, but this new one is entrusted to me. p. 252-253

31-94_SilhouettesAtPacific

To learn more about the book, check out a Q&A with the author at the Cornell Lab of Ornithology blog, All About Birds.

From “rolling stone” to World’s Best Dad: Richard Bribiescas on fathers

How Men Age jacketWhy is paternal investment so rare in the animal world? Why do some human fathers choose the caring route, while others don’t? Biological anthropologist Richard Bribiescas, author of How Men Age: What Evolution Reveals About Male Health and Mortality, reveals how many of the physical and behavioral changes that we negatively associate with male aging may have actually facilitated the emergence of positive traits. These traits, including how we parent, have been crucial to our success as a species. We caught up with Richard for a special Father’s Day Q&A.

Many in the animal kingdom aren’t noted for being the best fathers. What’s the evolutionary significance?

Chimps aren’t very good fathers. They just aren’t. They don’t care for their offspring, provide food, or offer any assistance to moms. Don’t get me wrong, chimpanzees are noble creatures who merit our stewardship as well as the common courtesy of not destroying their forests. They’re just not the fatherly type. In fairness to our great ape cousins, most males in the natural world won’t be earning waffles in bed. With a few exceptions such as certain South American monkeys 1, most mammalian males are unlikely to earn a “World’s Best Dad” coffee mug on Father’s Day. Men however can be terrific dads with paternal care being one of the hallmarks of our species. Human males often invest significant amounts of time and resources in their offspring. This is true in modern industrialized societies as well as hunter/gatherer groups. Pass the butter and maple syrup.

Why is paternal investment so rare in the animal world? There are several evolutionary reasons but one especially salient explanation is that caring for offspring requires knowing who your offspring are. This is known as paternal uncertainty and is evident in all species that have internal fertilization. In humans, estimates of paternal misidentification when asking individuals to identify their fathers and then testing that assumption genetically ranges from one to around ten percent, depending on the study and population 2. Conservatively that means for every hundred readers, at least one of you was fathered by a man who is not the recipient of your Father’s Day card. But don’t freak out. This simply means that women are just as likely as men to evolve a range of reproductive strategies. Plus the odds are still in your favor of being correct so there’s no need to forward the mail.

A recent finding that illustrates the evolutionary significance of paternal investment is the capacity for men to display different reproductive states. This has long been observed in women since non-pregnant, pregnant, and lactating states are readily visible with numerous associated hormone changes. In men, different reproductive states are less obvious but evident when you look at reproductive hormones such as testosterone. Anthropologists Peter Gray and Lee Gettler have demonstrated this in numerous cross-cultural studies that show testosterone declines in response to fatherhood 3,4. This is more evident when men are in paired relationships with women.

Then what about male/male relationships and gay fathers?

Good question. We’ll get to that in a bit. So what is the significance of lower testosterone in association with fatherhood? It is still unclear but declines in testosterone may have behavioral, immunological, or metabolic effects that promote paternal investment. Stay tuned.

But fathering children is not the same as being fatherly. Again, hormones provide a spiffy way of getting at this subtle but important point. Anthropologist Martin Muller and colleagues looked at testosterone levels in association with fatherhood in two African societies, the Datoga who are cattle herding people in which the men do not commonly engage in childcare and the Hadza, an adjacent population of hunter/gatherers in which the men regularly hold and care for their children. Testosterone levels were not significantly different between the two populations even when looking at paternal status. But when Muller and colleagues looked at within group testosterone levels in association with having their children close by, interesting differences emerged. When their children were around, Hadza men were much more engaged with them compared to Datoga men who do not pay much attention to their children. Among the Hadza testosterone levels were significantly lower when children were in their household compared to when they were not around. The presence or absence of children among the Datoga had no influence on testosterone levels 5. This suggests that paternal engagement is important to any changes in testosterone. Caring and engagement makes a difference.

What does it mean to be a good father?

While human males are unique in their potential to be doting fathers, they also exhibit a much broader spectrum of paternal behaviors compared to other primates and mammals. Men can be extremely caring to simply providing food to being infanticidal. As a boy growing up in the Watts area of south central Los Angeles in the ‘60’s and 70’s, my friends and I listened to a lot of The Temptations. Among their hits was “Papa Was a Rolling Stone”, a song that tells the story of children asking their mother about their estranged, wandering father. “Papa was never much on thinkin’, spent much of his time chasing women and drinkin’…” Why some men choose the caring route while others do not is unclear. Evolutionary theory suggests that in environments with lots of hazards and a low probability of living a long life, caring for offspring may take a backseat to more risky reproductive strategies such as seeking out additional mates in lieu of investing in family. This is true of both men and women 6. Since humans have evolved the ability to thrive in a broad range of ecological and social settings, it makes sense that behavioral biology of fatherhood would be broad and malleable7,8.

Let’s go back to the question of gay dads. There is no reason to assume that caring for children should be limited to straight men but adding the variable of sexual orientation is an interesting question given the range of variability in reproductive behavior in humans. Researchers examined brain scans of gay men in association with interactions with their children. They found that areas of the brain that are commonly activated in mothers and heterosexual fathers in response to children were also evident in gay fathers suggesting that the neurobiological mechanisms associated with childcare transcend gender or sexual orientation 9. Compared to other mammals and certainly other great apes, humans seem to be biologically predisposed to care for children. Do gay fathers exhibit the same hormonal changes as heterosexual dads? We don’t know yet although Yale anthropology Ph.D. candidate Erin Burke, Dr. Pasquale Patrizio of Yale Medical School and I are hot on the trail of this question 10. There are many ways to be a dad and we’re only beginning to understand that fatherhood is as varied as the colors and patterns on a homemade necktie.

Richard G. Bribiescas is professor of anthropology and ecology and evolutionary biology at Yale University, where he also serves as deputy provost for faculty development and diversity. He is the author of Men: Evolutionary and Life History. He lives in Hamden, Connecticut.

References and Endnotes

 

1          Fernandez-Duque, E., Valeggia, C. R. & Mendoza, S. P. The biology of paternal care in human and nonhuman primates. Annual Review of Anthropology 38, 115–130, doi:10.1146/annurev-anthro-091908-164334 (2009).

2          Anderson, K. G. How well does paternity confidence match actual paternity? Evidence from worldwide nonpaternity rates. Curr Anthropol 47, 513-520, doi:Doi 10.1086/504167 (2006).

3          Gray, P. B. & Anderson, K. G. Fatherhood : evolution and human paternal behavior. (Harvard University Press, 2010).

4          Gettler, L. T., McDade, T. W., Feranil, A. B. & Kuzawa, C. W. Longitudinal evidence that fatherhood decreases testosterone in human males. Proc Natl Acad Sci U S A 108, 16194-16199, doi:10.1073/pnas.1105403108 (2011).

5          Muller, M. N., Marlow, F. W., Bugumba, R. & Ellison, P. T. Testosterone and paternal care in East African foragers and pastoralists. Proceedings of the Royal Society, Biological Sciences 276, 347-354 (2009).

6          Quinlan, R. J. Human parental effort and environmental risk. Proc Biol Sci 274, 121-125, doi:10.1098/rspb.2006.3690 (2007).

7          Bribiescas, R. G. Men: Evolutionary and Life History. (Harvard University Press, 2006).

8          Bribiescas, R. G. How Men Age: What Evolution Reveals about Male Health and Mortality. (Princeton University Press, 2016).

9          Abraham, E. et al. Father’s brain is sensitive to childcare experiences. Proc Natl Acad Sci U S A 111, 9792-9797, doi:10.1073/pnas.1402569111 (2014).

10        Burke, E. E. & Bribiescas, R. G. Hormones and behavior in same-sex male parents: implications for the evolution of paternal care in humans. Am J Phys Anthropol 159, 105 (2016).

 

Firefly Fact Friday – Japanese Fireflies: Harvested for Beauty

This week our firefly fact comes from Sara Lewis:

While fireflies were harvested for their light-producing chemicals in the U.S., in Japan fireflies were harvested for their beauty. In Japan’s Shiga Prefecture, many firefly merchants set up shop every summer from the early 1800s through the 1920s. They hired hunters to collect genji-botaru (Luciola cruciata) fireflies, which they sold to clients in Osaka, Tokyo, and Kyoto. Hotel and restaurant owners released these wild-caught fireflies into their gardens, where customers would pay to enjoy their luminous beauty. By some estimates, firefly vendors sold three million wild insects to city folk every June and July. Soon, firefly populations began to dwindle due to over-collecting, river pollution, and habitat loss. Silent Sparks describes the ecohistory of Japanese and U.S. fireflies, including some successful conservation efforts.

catching fireflies print

Silent Sparks: The Wondrous World of Fireflies
Sara Lewis

LewisFor centuries, the beauty of fireflies has evoked wonder and delight. Yet for most of us, fireflies remain shrouded in mystery: How do fireflies make their light? What are they saying with their flashing? And what do fireflies look for in a mate? In Silent Sparks, noted biologist and firefly expert Sara Lewis dives into the fascinating world of fireflies and reveals the most up-to-date discoveries about these beloved insects. From the meadows of New England and the hills of the Great Smoky Mountains, to the rivers of Japan and mangrove forests of Malaysia, this beautifully illustrated and accessible book uncovers the remarkable, dramatic stories of birth, courtship, romance, sex, deceit, poison, and death among fireflies.

The nearly two thousand species of fireflies worldwide have evolved in different ways—and while most mate through the aerial language of blinking lights, not all do. Lewis introduces us to fireflies that don’t light up at all, relying on wind-borne perfumes to find mates, and we encounter glow-worm fireflies, whose plump, wingless females never fly. We go behind the scenes to meet inquisitive scientists who have dedicated their lives to understanding fireflies, and we learn about various modern threats including light pollution and habitat destruction. In the last section of the book, Lewis provides a field guide for North American fireflies, enabling us to identify them in our own backyards and neighborhoods. This concise, handy guide includes distinguishing features, habits, and range maps for the most commonly encountered fireflies, as well as a gear list.

A passionate exploration of one of the world’s most charismatic and admired insects, Silent Sparks will inspire us to reconnect with the natural world.

For more information, visit Sara Lewis’s website! To check out some cool firefly videos, find her on Vimeo.

Firefly Fact Friday – The Firefly Genome Project

This week we have a special announcement from Sara Lewis:

Fireflies! Their silent summer fireworks fill us with wonder, yet so much about this fascinating creatures has been shrouded in mystery. But now a path-breaking scientific initiative promises to reveal the science behind the spectacle by unveiling the genetic blueprint of Photinus pyralis, the Big Dipper firefly. Last week the Firefly Genome Project was successfully funded through the crowd funding site Experiment. The popularity of Silent Sparks helped to spread the word, and more than 80 people from all over the world helped to fund this collaborative project. Scientists hope that sequencing the firefly genome will help to illuminate how firefly features like flashing and nuptial gifts have evolved, foster important advances in bioscience and medicine, and help guide future conservation efforts.

Silent Sparks: The Wondrous World of Fireflies 
Sara Lewis

LewisFor centuries, the beauty of fireflies has evoked wonder and delight. Yet for most of us, fireflies remain shrouded in mystery: How do fireflies make their light? What are they saying with their flashing? And what do fireflies look for in a mate? In Silent Sparks, noted biologist and firefly expert Sara Lewis dives into the fascinating world of fireflies and reveals the most up-to-date discoveries about these beloved insects. From the meadows of New England and the hills of the Great Smoky Mountains, to the rivers of Japan and mangrove forests of Malaysia, this beautifully illustrated and accessible book uncovers the remarkable, dramatic stories of birth, courtship, romance, sex, deceit, poison, and death among fireflies.

The nearly two thousand species of fireflies worldwide have evolved in different ways—and while most mate through the aerial language of blinking lights, not all do. Lewis introduces us to fireflies that don’t light up at all, relying on wind-borne perfumes to find mates, and we encounter glow-worm fireflies, whose plump, wingless females never fly. We go behind the scenes to meet inquisitive scientists who have dedicated their lives to understanding fireflies, and we learn about various modern threats including light pollution and habitat destruction. In the last section of the book, Lewis provides a field guide for North American fireflies, enabling us to identify them in our own backyards and neighborhoods. This concise, handy guide includes distinguishing features, habits, and range maps for the most commonly encountered fireflies, as well as a gear list.

A passionate exploration of one of the world’s most charismatic and admired insects, Silent Sparks will inspire us to reconnect with the natural world.

For more information, visit Sara Lewis’s website! To check out some cool firefly videos, find her on Vimeo.

Firefly Fact Friday – How you get the girl

“[F]emale Photinus [fireflies] are quite picky. Even the most ardent suitor is rarely favored with a reply: Photinus females typically answer fewer than half of the male courtship flashes they see on a given night. When a female likes a particular suitor, she’ll show this by responding more reliably to his flashes. And whichever male can elicit the highest rate of female responses is usually the one who gets the girl.” p. 41

Silent Sparks: The Wondrous World of Fireflies
Sara Lewis

LewisFor centuries, the beauty of fireflies has evoked wonder and delight. Yet for most of us, fireflies remain shrouded in mystery: How do fireflies make their light? What are they saying with their flashing? And what do fireflies look for in a mate? In Silent Sparks, noted biologist and firefly expert Sara Lewis dives into the fascinating world of fireflies and reveals the most up-to-date discoveries about these beloved insects. From the meadows of New England and the hills of the Great Smoky Mountains, to the rivers of Japan and mangrove forests of Malaysia, this beautifully illustrated and accessible book uncovers the remarkable, dramatic stories of birth, courtship, romance, sex, deceit, poison, and death among fireflies.

The nearly two thousand species of fireflies worldwide have evolved in different ways—and while most mate through the aerial language of blinking lights, not all do. Lewis introduces us to fireflies that don’t light up at all, relying on wind-borne perfumes to find mates, and we encounter glow-worm fireflies, whose plump, wingless females never fly. We go behind the scenes to meet inquisitive scientists who have dedicated their lives to understanding fireflies, and we learn about various modern threats including light pollution and habitat destruction. In the last section of the book, Lewis provides a field guide for North American fireflies, enabling us to identify them in our own backyards and neighborhoods. This concise, handy guide includes distinguishing features, habits, and range maps for the most commonly encountered fireflies, as well as a gear list.

A passionate exploration of one of the world’s most charismatic and admired insects, Silent Sparks will inspire us to reconnect with the natural world.

For more information, visit Sara Lewis’s website! To check out some cool firefly videos, find her on Vimeo

The bright world of fireflies: photographs from Silent Sparks

silent sparks jacketCharismatic, admired, and endlessly mysterious, fireflies have long been a source of intrigue. Sara Lewis has spent nearly thirty years examining the lives, surprising habits, and habitats of these beloved and frequently romanticized insects. As Memorial Day weekend winds down and fireflies start to make their debut in summer skies, take a peek inside the new book, Silent Sparks: The Wondrous World of Fireflies.

 

 

 

Firefly Fact Friday – Mating behaviors of male fireflies

“Male mate competition has led to the evolution of many extraordinary mating behaviors. For one thing, males often get a jump-start on metamorphosis, and turn into adults sooner than their corresponding females. This pattern of early male emergence is known as protandry, and it’s common among butterflies, mayflies, mosquitos, and fireflies. Male competition even compels some insect males to take child brides … [M]ales will jealously stand guard over an immature female, chasing off rival males and waiting patiently until she becomes sexually mature … Some male fireflies … use this child-bride tactic, guarding immature females and then mating when the female crawls out.” p. 38

Silent Sparks: The Wondrous World of Fireflies
Sara Lewis

LewisFor centuries, the beauty of fireflies has evoked wonder and delight. Yet for most of us, fireflies remain shrouded in mystery: How do fireflies make their light? What are they saying with their flashing? And what do fireflies look for in a mate? In Silent Sparks, noted biologist and firefly expert Sara Lewis dives into the fascinating world of fireflies and reveals the most up-to-date discoveries about these beloved insects. From the meadows of New England and the hills of the Great Smoky Mountains, to the rivers of Japan and mangrove forests of Malaysia, this beautifully illustrated and accessible book uncovers the remarkable, dramatic stories of birth, courtship, romance, sex, deceit, poison, and death among fireflies.

The nearly two thousand species of fireflies worldwide have evolved in different ways—and while most mate through the aerial language of blinking lights, not all do. Lewis introduces us to fireflies that don’t light up at all, relying on wind-borne perfumes to find mates, and we encounter glow-worm fireflies, whose plump, wingless females never fly. We go behind the scenes to meet inquisitive scientists who have dedicated their lives to understanding fireflies, and we learn about various modern threats including light pollution and habitat destruction. In the last section of the book, Lewis provides a field guide for North American fireflies, enabling us to identify them in our own backyards and neighborhoods. This concise, handy guide includes distinguishing features, habits, and range maps for the most commonly encountered fireflies, as well as a gear list.

A passionate exploration of one of the world’s most charismatic and admired insects, Silent Sparks will inspire us to reconnect with the natural world.

For more information, visit Sara Lewis’s website! To check out some cool firefly videos, find her on Vimeo.

Bee Hunting—Tools of the Trade

BeesIn Following the Wild Bees, Thomas Seeley provides a handy how-to guide on the ancient practice of bee hunting. Bee hunting involves luring bees to a honeycomb filled with homemade sugar syrup and then, once they’ve had their fill, tracking them as they fly off to their hive home. Finding the beehive is the ultimate goal. Along the way, the bee hunter can appreciate natural beauty while learning about the unique behavior of the cognitively advanced honeybee.

To bee hunt successfully, there are a few tools that are must-haves, and a few that will make life easier as you track bees through their natural habitats. Never fear, though! Bee hunting is a relatively inexpensive sport, and all of the items can fit comfortably inside a backpack.

The most important tool is the bee box. This is a small wooden box (5.5 inches long, 3.5 inches wide, and 3 inches high) with two compartments that enables the bee hunter to capture bees and lure them to the store of sugar syrup. You will also need an opaque cloth to cover the bee box once there are bees inside to help them discover the bait.

Bee Box

For bait you will need two small squares of empty comb that will fit inside one of the compartments of the bee box. These can be obtained from a beekeeper. Next, you will need a jar of sugar syrup. This sugar is easily made by mixing 1.5 cups of pure, white cane sugar with enough boiling water to make two cups of syrup. To finish, add 1 drop of anise extract to make the bait irresistible to the bees. To transfer the sugar syrup to the comb, use a small dropper.

Once you have trapped the bees in your bee box, helped them to discover the bait, and then set them free to offload the “nectar” in their hive, you will need to make the combs as conspicuous as possible for when they return, hopefully with some bee friends. You will need a jar lid, scented with a few drops of anise extract, and a small piece of 8-mesh hardware cloth (easily obtained at a hardware store) that will sit on top of the jar lid. You then place the comb on top of the hardware cloth in the open air and wait for your bees to return.

In order to identify individual bees, you will need a set of paint pens. You should also have a watch with a second hand, a notebook, and a magnetic compass to take accurate notes on the movements of your bees.

Finally, you will need a backpack or toolbox to carry all of your items as you track the bees to their hidden home. You might want to bring a folding chair, a stand for the bee box, a roll of vinyl flagging to mark your path through the woods, and a topographic map of the area. With these items you will be well on your way to engaging in the sport of bee hunting.

While the tools will help, there are important skills that you will also need to conduct a bee hunt. For a complete guide on how to become a master bee hunter, pick up a copy of Thomas Seeley’s Following the Wild Bees. In the meantime, check out our slideshow of beautiful full color images from the book.

Firefly Fact Friday – Why did fireflies’ light first evolve?

“Many poisonous or distasteful animals use bright coloration—often yellow, orange, red, and black—to warn off potential predators…. But firefly larvae are active mainly at night or underground, where such bright colors would be futile. A light in the darkness, on the other hand, would be quite noticeable. We also know that larval fireflies taste terrible…. So ample evidence suggests that fireflies’ bioluminescence first evolved to help baby fireflies ward of predators: like a neon warning sign, it blazed out “I’m toxic—stay away!” Millions of years would elapse before these larval lights got co-opted to become a courtship signal for adult fireflies.” p. 22

Silent Sparks: The Wondrous World of Fireflies 
Sara Lewis

LewisFor centuries, the beauty of fireflies has evoked wonder and delight. Yet for most of us, fireflies remain shrouded in mystery: How do fireflies make their light? What are they saying with their flashing? And what do fireflies look for in a mate? In Silent Sparks, noted biologist and firefly expert Sara Lewis dives into the fascinating world of fireflies and reveals the most up-to-date discoveries about these beloved insects. From the meadows of New England and the hills of the Great Smoky Mountains, to the rivers of Japan and mangrove forests of Malaysia, this beautifully illustrated and accessible book uncovers the remarkable, dramatic stories of birth, courtship, romance, sex, deceit, poison, and death among fireflies.

The nearly two thousand species of fireflies worldwide have evolved in different ways—and while most mate through the aerial language of blinking lights, not all do. Lewis introduces us to fireflies that don’t light up at all, relying on wind-borne perfumes to find mates, and we encounter glow-worm fireflies, whose plump, wingless females never fly. We go behind the scenes to meet inquisitive scientists who have dedicated their lives to understanding fireflies, and we learn about various modern threats including light pollution and habitat destruction. In the last section of the book, Lewis provides a field guide for North American fireflies, enabling us to identify them in our own backyards and neighborhoods. This concise, handy guide includes distinguishing features, habits, and range maps for the most commonly encountered fireflies, as well as a gear list.

A passionate exploration of one of the world’s most charismatic and admired insects, Silent Sparks will inspire us to reconnect with the natural world.

For more information, visit Sara Lewis’s website! To check out some cool firefly videos, find her on Vimeo.

New trailer for Listening to a Continent Sing

In Listening to a Continent Sing, Donald Kroodsma tells the story of a ten-week, ten-state bicycle adventure he shared with his son. The book features QR codes that link to audio of birdsong they recorded on their journey. Check out our new trailer for some beautiful illustrations from the book!

Listening to a Continent Sing: Birdsong by Bicycle from the Atlantic to the Pacific, Donald Kroodsma from Princeton University Press on Vimeo.

Kroodsma

Ten weeks, ten states, and a symphony of birdsong

listening to a continent sing kroodsma jacketTake a journey across ten weeks and ten states,  from one coast of America to another, as Donald Kroodsma and his son bike 5,000 miles and record birdsong along the way. In Listening to a Continent Sing: Birdsong by Bicycle from the Atlantic to the Pacific, Kroodsma  provides a written account of this inspirational adventure that is one part personal memoir, one part guided history, one part invitation to pursue your own dreams. The book is beautifully illustrated, incorporating images of the vast terrain and animals the pair encountered on their trip. QR codes link to audio of birdsong throughout.

Click through to enlarge some of the book’s images here.