Bird Fact Friday – Which vulture’s head color varies with mood?

Lesser Yellow-headed
Vulture. Adult. Credit William S. Clark

From page 95 in Raptors of Mexico and Central America:

The Lesser Yellow-headed Vultures forage for carrion by gliding low over wet open areas and are able to locate carrion by smell as well as by sight. They also spend lots of time perched on the ground or on a low fence post. Active flight is with slow, deep, deliberate wing beats on flexible wings. They soar and glide with wings in a strong dihedral, often rocking or teetering from side to side, rarely soaring high. Adults’ head color varies with mood; the head is redder when the vulture is excited. Cathartid vultures often bow their wings downward in a flex until the tips almost meet.

Raptors of Mexico and Central America
William S. Clark & N. John Schmitt
With a foreword by Lloyd Kiff
Introduction | Sample Plate

Raptors are among the most challenging birds to identify in the field due to their bewildering variability of plumage, flight silhouettes, and behavior. Raptors of Mexico and Central America is the first illustrated guide to the region’s 69 species of raptors, including vagrants. It features 32 stunning color plates and 213 color photos, and a distribution map for each regularly occurring species. Detailed species accounts describe key identification features, age-related plumages, status and distribution, subspecies, molt, habitats, behaviors, potential confusion species, and more.

Raptors of Mexico and Central America is the essential field guide to this difficult bird group and the ideal travel companion for anyone visiting this region of the world.

This post is part of a series, explore additional posts here<< Bird Fact Friday – Nectar and fruit-eating specialistsBird Fact Friday – Weekly Warbler: Worm-eating >>