Bird Fact Friday – What’s the best weather for peak hawk flights?

From page 10 in Hawks from Every Angle:

During spring, many peak flights occur ahead of a warm front, as birds heading north use southerly prevailing winds. Most fall flights occur after the passage of a cold front, when northerly winds that assist birds heading south are most prevalent. Geography, however, determines which specific wind directions will lead birds to each site. The most favorable winds for ridge sites are those that strike the ridge at an angle that produces optimal lift. At coastal and shoreline sites, optimal winds are those that “push” birds towards the shorelines. Even during snow squalls or light drizzle, optimal wind conditions can produce significant hawk flights.


hawksHawks from Every Angle
How to Identify Raptors In Flight
Jerry Liguori
Foreword by David A. Sibley

Identifying hawks in flight is a tricky business. Across North America, tens of thousands of people gather every spring and fall at more than one thousand known hawk migration sites—from New Jersey’s Cape May to California’s Golden Gate. Yet, as many discover, a standard field guide, with its emphasis on plumage, is often of little help in identifying those raptors soaring, gliding, or flapping far, far away. Hawks from Every Angle takes hawk identification to new heights. It offers a fresh approach that literally looks at the birds from every angle, compares and contrasts deceptively similar species, and provides the pictures (and words) needed for identification in the field. Jerry Liguori pinpoints innovative, field-tested identification traits for each species at the various angles that they are seen.

Featuring 339 striking color photos on 68 color plates and 32 black & white photos, Hawks from Every Angle is unique in presenting a host of meticulously crafted pictures for each of the 19 species it covers in detail—the species most common to migration sites throughout the United States and Canada. All aspects of raptor identification, including plumage, shape, and flight style traits, are discussed. For all birders who follow hawk migration and have found themselves wondering if the raptor in the sky does in fact match the one in the guide, Hawks from Every Angle—distilling an expert’s years of experience for the first time into a comprehensive array of truly useful photos and other pointers for each species—is quite simply a must.

Bird Fact Friday – The most loquacious geese

From page 235 in Waterfowl of North America, Europe, and Asia:

A snow goose can be very loquacious, even noisy, especially in flight, when taking off or landing. It produces loud, raucous, barking calls gwok or ga-ik, as well as other sounds more like those of grey geese, lower and hoarser: gung, wa-iir or hun-hrr. Large flocks utter these calls continuously and at different pitches, linked to the birds’ size.

Waterfowl of North America, Europe, and Asia
An Identification Guide
Sébastien Reeber

This is the ultimate guide for anyone who wants to identify the ducks, geese, and swans of North America, Europe, and Asia. With 72 stunning color plates (that include more than 920 drawings), over 650 superb photos, and in-depth descriptions, this book brings together the most current information on 84 species of Eurasian and North American waterfowl, and on more than 100 hybrids. The guide delves into taxonomy, identification features, determination of age and sex, geographic variations, measurements, voice, molt, and hybridization. In addition, the status of each species is treated with up-to-date details on distribution, population size, habitats, and life cycle. Color plates and photos are accompanied by informative captions and 85 distribution maps are also provided. Taken together, this is an unrivaled, must-have reference for any birder with an interest in the world’s waterfowl.

Bird Fact Friday – When habitat dictates behavior

From page 15 of Better Birding:

Habitat very often dictates behavior. A Northern Harrier glides and swoops low over fields and marshes, periodically flapping and hovering. It behaves this way because it hunts rodents and this kind of low, cruising flight allows it to more easily detect prey. A Harrier’s long wings allow it to pluck rodents cleanly from grassy cover. Harriers have evolved just so, to nimbly take advantage of these open habitats, including during migration. An appreciation of these qualities allows good birders to recognize a Harrier by its structure or movements from considerable distances. Species evolve to take best advantage of their environment.

Better BirdingBetter Birding
Tips, Tools, and Concepts for the Field
George L. Armistead & Brian L. Sullivan
Introduction

Better Birding reveals the techniques expert birders use to identify a wide array of bird species in the field—quickly and easily. Featuring hundreds of stunning photos and composite plates throughout, this book simplifies identification by organizing the birds you see into groupings and offering strategies specifically tailored to each group. Skill building focuses not just on traditional elements such as plumage, but also on creating a context around each bird, including habitat, behavior, and taxonomy—parts so integral to every bird’s identity but often glossed over by typical field guides. Critical background information is provided for each group, enabling you to approach bird identification with a wide-angle view, using your eyes, brain, and binoculars more strategically, resulting in a more organized approach to learning birds.

Bird Fact Friday – Why do birds molt?

From page 32 in The Crossley ID Guide: Eastern Birds:

Birds essentially do the same things cyclically, and this includes molting. They do this for a number of reasons. It is important that feathers be kept in good condition to keep the bird warm, dry, and mobile. Of course, some like to look good to attract a mate! Having an understanding of molt and how it affects a bird’s appearance is a large help not only in identifying birds but also in ageing and sexing them.

The Crossley ID Guide
Eastern Birds
Richard Crossley
Introduction

Crossley ID GuideThis stunningly illustrated book from acclaimed birder and photographer Richard Crossley revolutionizes field guide design by providing the first real-life approach to identification. Whether you are a beginner, expert, or anywhere in between, The Crossley ID Guide will vastly improve your ability to identify birds.

This is the first book to feature large, lifelike scenes for each species. These scenes—640 in all—are composed from more than 10,000 of the author’s images showing birds in a wide range of views—near and far, from different angles, in various plumages and behaviors, including flight, and in the habitat in which they live. These beautiful compositions show how a bird’s appearance changes with distance, and give equal emphasis to characteristics experts use to identify birds: size, structure and shape, behavior, probability, and color. Each scene provides a wealth of detailed visual information that invites and rewards careful study, but the most important identification features can be grasped instantly by anyone.

Bird Fact Friday – How to identify birds in various light conditions

From page 5 in Hawks from Every Angle:

Understanding how various light conditions can affect the appearance of raptors is important in identification. Lightly colored birds can lack contrast and appear uniformly dark in poor light, such as when backlit or against a cloudy sky, whereas true dark morph birds show a contrast underneath between the body and flight feathers. By contrast, birds can look paler than usual when illuminated by highly reflective ground cover such as snow, sand, and pale grasses. Several conditions affect the way a bird’s size and shape are perceived. Against a bright blue sky, birds often appear smaller than usual; however, birds may appear larger than usual when observed against cloud cover.

hawksHawks from Every Angle
How to Identify Raptors In Flight
Jerry Liguori
Foreword by David A. Sibley

Identifying hawks in flight is a tricky business. Across North America, tens of thousands of people gather every spring and fall at more than one thousand known hawk migration sites—from New Jersey’s Cape May to California’s Golden Gate. Yet, as many discover, a standard field guide, with its emphasis on plumage, is often of little help in identifying those raptors soaring, gliding, or flapping far, far away. Hawks from Every Angle takes hawk identification to new heights. It offers a fresh approach that literally looks at the birds from every angle, compares and contrasts deceptively similar species, and provides the pictures (and words) needed for identification in the field. Jerry Liguori pinpoints innovative, field-tested identification traits for each species at the various angles that they are seen.

Featuring 339 striking color photos on 68 color plates and 32 black & white photos, Hawks from Every Angle is unique in presenting a host of meticulously crafted pictures for each of the 19 species it covers in detail—the species most common to migration sites throughout the United States and Canada. All aspects of raptor identification, including plumage, shape, and flight style traits, are discussed. For all birders who follow hawk migration and have found themselves wondering if the raptor in the sky does in fact match the one in the guide, Hawks from Every Angle—distilling an expert’s years of experience for the first time into a comprehensive array of truly useful photos and other pointers for each species—is quite simply a must.

Announcing the Warbler Guide App, Version 1.1

Everyone loves warblers, and we’re excited to announce the Warbler Guide App Version 1.1 designed for both Android & Apple devices, just in time for the coming spring migration!

Scott Whittle and Tom Stephenson revolutionized how birders study, find, hear, and see warblers with their acclaimed book, The Warbler Guide. Now, with higher-resolution, rotatable 3D models that zoom to feather-level detail, refined search criteria, and new help sections, the Warbler Guide App Version 1.1 is better than ever at using audio and visual clues to help you make rapid and confident warbler identifications. Intuitive audio and video filters, a full song library, and useful comparisons make this an exciting, multi-faceted tool for any birder to use. Take a peek.

Unique new app-only features:

  • High-resolution, zoomable, and rotatable 3D models of birds in all plumages, to match field experience of a birder
  • Intuitive, visual, and interactive finders with filters for possible species based on audio and visual criteria chosen by the user
  • Playback of all songs and vocalizations with sonograms makes study of vocalizations easy
  • Selectable finder sortings grouped by color, alphabetical order, song type, and taxonomic order
  • Interactive song finder using objective vocabulary for fast ID of unknown songs
  • Simultaneous visual and song finders makes identifying an unknown warbler even easier
  • Half-speed song playback allows for easier study of song structure
  • Comparison species with selectable side, 45 degree, and undertail views
  • Features 75 3D images
  • Covers 48 species and 75 plumages
  • Includes 277 vocalizations, 156 songs, 73 contact calls, and 48 flight calls
  • Detailed “how to use” tutorial screens

Bird Fact Friday — Not so bird brained after all…

From page 161 of Bird Brain:

Bird Brain by Nathan Emery makes the case that birds are not as devoid of intelligence as has previously been thought. In fact, some can even be considered as smart as apes and dolphins. This concludes our Bird Fact Friday feature. Stay tuned for Horse Fact Friday starting in the new year!

Bird Brain
An Exploration of Avian Intelligence
Nathan Emery
With a foreword by Frans de Waal
Introduction

EmeryBirds have not been known for their high IQs, which is why a person of questionable intelligence is sometimes called a “birdbrain.” Yet in the past two decades, the study of avian intelligence has witnessed dramatic advances. From a time when birds were seen as simple instinct machines responding only to stimuli in their external worlds, we now know that some birds have complex internal worlds as well. This beautifully illustrated book provides an engaging exploration of the avian mind, revealing how science is exploding one of the most widespread myths about our feathered friends—and changing the way we think about intelligence in other animals as well.

Bird Brain looks at the structures and functions of the avian brain, and describes the extraordinary behaviors that different types of avian intelligence give rise to. It offers insights into crows, jays, magpies, and other corvids—the “masterminds” of the avian world—as well as parrots and some less-studied species from around the world. This lively and accessible book shows how birds have sophisticated brains with abilities previously thought to be uniquely human, such as mental time travel, self-recognition, empathy, problem solving, imagination, and insight.

Written by a leading expert and featuring a foreword by Frans de Waal, renowned for his work on animal intelligence, Bird Brain shines critical new light on the mental lives of birds.

Bird Fact Friday – The bird in the mirror

From page 138 of Bird Brain:

Mirrors have been used in experiments with birds to test if they have a sense of self. Different species of birds react in different ways when confronted with their reflection. For example, flamingos will only mate when their flock is large enough—mirrors have been used to trick them into thinking it is. Various crows behave as if in the presence of another bird, with females preening and males displaying. New Caledonian crows use the mirror to forage for food that is not visible without it, suggesting that they know how it works. Magpies seem to recognize their own reflection, and use the mirror to preen parts of their bodies that were not visible without the mirror.

Bird Brain
An Exploration of Avian Intelligence
Nathan Emery
With a foreword by Frans de Waal
Introduction

EmeryBirds have not been known for their high IQs, which is why a person of questionable intelligence is sometimes called a “birdbrain.” Yet in the past two decades, the study of avian intelligence has witnessed dramatic advances. From a time when birds were seen as simple instinct machines responding only to stimuli in their external worlds, we now know that some birds have complex internal worlds as well. This beautifully illustrated book provides an engaging exploration of the avian mind, revealing how science is exploding one of the most widespread myths about our feathered friends—and changing the way we think about intelligence in other animals as well.

Bird Brain looks at the structures and functions of the avian brain, and describes the extraordinary behaviors that different types of avian intelligence give rise to. It offers insights into crows, jays, magpies, and other corvids—the “masterminds” of the avian world—as well as parrots and some less-studied species from around the world. This lively and accessible book shows how birds have sophisticated brains with abilities previously thought to be uniquely human, such as mental time travel, self-recognition, empathy, problem solving, imagination, and insight.

Written by a leading expert and featuring a foreword by Frans de Waal, renowned for his work on animal intelligence, Bird Brain shines critical new light on the mental lives of birds.

Bird Fact Friday – Master toolmakers

From page 120 of Bird Brain:

New Caledonian crows sculpt their own tools from raw materials. The first type is made from the strong and flexible Pandanus leaf. A crow bites one end of an individual leaf and pulls off a long strip, detaching the piece. The tool has a sharpened point at one or both ends, and, depending on the leaf, a jagged edge. It is used to catch certain kinds of prey.

Bird Brain
An Exploration of Avian Intelligence
Nathan Emery
With a foreword by Frans de Waal
Introduction

EmeryBirds have not been known for their high IQs, which is why a person of questionable intelligence is sometimes called a “birdbrain.” Yet in the past two decades, the study of avian intelligence has witnessed dramatic advances. From a time when birds were seen as simple instinct machines responding only to stimuli in their external worlds, we now know that some birds have complex internal worlds as well. This beautifully illustrated book provides an engaging exploration of the avian mind, revealing how science is exploding one of the most widespread myths about our feathered friends—and changing the way we think about intelligence in other animals as well.

Bird Brain looks at the structures and functions of the avian brain, and describes the extraordinary behaviors that different types of avian intelligence give rise to. It offers insights into crows, jays, magpies, and other corvids—the “masterminds” of the avian world—as well as parrots and some less-studied species from around the world. This lively and accessible book shows how birds have sophisticated brains with abilities previously thought to be uniquely human, such as mental time travel, self-recognition, empathy, problem solving, imagination, and insight.

Written by a leading expert and featuring a foreword by Frans de Waal, renowned for his work on animal intelligence, Bird Brain shines critical new light on the mental lives of birds.

Bird Fact Friday – How do birds use tools?

From page 113 of Bird Brain:

Birds, especially songbirds and parrots, use tools in a variety of ways to source food. A popular method is bait-fishing. For example, a heron will grasp small insects in the tip of its bill and hold them over the surface of the water—fish who rise to the surface become dinner. Burrowing owls do something similar, placing dung at the entrance to their burrows to attract insects.

Bird Brain
An Exploration of Avian Intelligence
Nathan Emery
With a foreword by Frans de Waal
Introduction

EmeryBirds have not been known for their high IQs, which is why a person of questionable intelligence is sometimes called a “birdbrain.” Yet in the past two decades, the study of avian intelligence has witnessed dramatic advances. From a time when birds were seen as simple instinct machines responding only to stimuli in their external worlds, we now know that some birds have complex internal worlds as well. This beautifully illustrated book provides an engaging exploration of the avian mind, revealing how science is exploding one of the most widespread myths about our feathered friends—and changing the way we think about intelligence in other animals as well.

Bird Brain looks at the structures and functions of the avian brain, and describes the extraordinary behaviors that different types of avian intelligence give rise to. It offers insights into crows, jays, magpies, and other corvids—the “masterminds” of the avian world—as well as parrots and some less-studied species from around the world. This lively and accessible book shows how birds have sophisticated brains with abilities previously thought to be uniquely human, such as mental time travel, self-recognition, empathy, problem solving, imagination, and insight.

Written by a leading expert and featuring a foreword by Frans de Waal, renowned for his work on animal intelligence, Bird Brain shines critical new light on the mental lives of birds.

Bird Fact Friday – Birds of a feather flock together…

From page 89 of Bird Brain:

Most birds are gregarious rather than solitary. Despite the challenges posed by living in large groups, including the tendency to increase the potential spread of disease or parasites and increased visibility to predators, many species of birds do just that. Group living also has many benefits, including making it easier to find a mate, increasing opportunities for learning from others, and increasing access to food. Many bird species have evolved a group hierarchy to combat some of the difficulties of living together.

Bird Brain
An Exploration of Avian Intelligence
Nathan Emery
With a foreword by Frans de Waal
Introduction

EmeryBirds have not been known for their high IQs, which is why a person of questionable intelligence is sometimes called a “birdbrain.” Yet in the past two decades, the study of avian intelligence has witnessed dramatic advances. From a time when birds were seen as simple instinct machines responding only to stimuli in their external worlds, we now know that some birds have complex internal worlds as well. This beautifully illustrated book provides an engaging exploration of the avian mind, revealing how science is exploding one of the most widespread myths about our feathered friends—and changing the way we think about intelligence in other animals as well.

Bird Brain looks at the structures and functions of the avian brain, and describes the extraordinary behaviors that different types of avian intelligence give rise to. It offers insights into crows, jays, magpies, and other corvids—the “masterminds” of the avian world—as well as parrots and some less-studied species from around the world. This lively and accessible book shows how birds have sophisticated brains with abilities previously thought to be uniquely human, such as mental time travel, self-recognition, empathy, problem solving, imagination, and insight.

Written by a leading expert and featuring a foreword by Frans de Waal, renowned for his work on animal intelligence, Bird Brain shines critical new light on the mental lives of birds.

Bird Fact Friday – Do birds create art?

From page 76 of Bird Brain:

As part of their mating ritual, male bowerbirds create complex structures (bowers) usually made from an intertwining of grasses and sticks in vast networks resembling nests that are often adorned with bright, colorful, natural and artificial objects. Females make an assessment of a bower, the objects, and the presentation skills and vocal ability of the male before deciding whether to mate with him.

Bird Brain
An Exploration of Avian Intelligence
Nathan Emery
With a foreword by Frans de Waal
Introduction

EmeryBirds have not been known for their high IQs, which is why a person of questionable intelligence is sometimes called a “birdbrain.” Yet in the past two decades, the study of avian intelligence has witnessed dramatic advances. From a time when birds were seen as simple instinct machines responding only to stimuli in their external worlds, we now know that some birds have complex internal worlds as well. This beautifully illustrated book provides an engaging exploration of the avian mind, revealing how science is exploding one of the most widespread myths about our feathered friends—and changing the way we think about intelligence in other animals as well.

Bird Brain looks at the structures and functions of the avian brain, and describes the extraordinary behaviors that different types of avian intelligence give rise to. It offers insights into crows, jays, magpies, and other corvids—the “masterminds” of the avian world—as well as parrots and some less-studied species from around the world. This lively and accessible book shows how birds have sophisticated brains with abilities previously thought to be uniquely human, such as mental time travel, self-recognition, empathy, problem solving, imagination, and insight.

Written by a leading expert and featuring a foreword by Frans de Waal, renowned for his work on animal intelligence, Bird Brain shines critical new light on the mental lives of birds.