Birds

When to Expect Hummingbirds in Eastern North America?

photo: Francesco Veronesi/Flickr/CC by 2.0 In this article, I propose an approximate date to start feeding hummingbirds in Eastern North America, based on the time of arrival in the Spring and departure in the Fall. The time of arrival and departure varies between male, females, and young hummingbirds. The variation in time of arrival and …

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snowy owl web cam

Live Bird Cams: Hummingbirds, Owls, Hawks, and Bird Feeders

Tune in to one of the seven bird web cameras broadcasting from 7 locations. Cam #1. Live bird cam: Feeding Station. Cam #2. Puffin nesting colony Webcam. Cam #3. Live stream, rainforest bird feeder cam. Cam #4. Live broadcast hummingbird feeder cam in Texas. Cam #5. Live broadcast, hummingbird feeder cam in California. Cam #6. …

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Bluebird Parental Care of Hatchlings, Nestlings, and Fledglings

Bluebirds hatch nearly simultaneously. It takes only about 20-30 minutes for all eggs to hatch. Chicks hatch blind and naked. Both parents take care of the young and feed them with a diet rich in proteins. Nestlings grow fast and leave the nest in about 16 to 25 days, depending on the region. After they …

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do eastern bluebirds really mare for life

Most Eastern Bluebirds Mate for life, But there is More to It

Male and female Eastern Bluebirds. Photo: Patricia Pierce/Flickr/CC by 2.0. Most Bluebirds (95%) mate for life when both, the male and female of a pair, are alive. When a member of the pair dies, another mate replaces it. Mated pairs appear to engage in extra-pair copulations. Genetic studies have shown that more than one Bluebird …

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do eastern bluebirds migrate for the winter

Do Eastern Bluebirds Migrate for the Winter?

The Eastern Bluebird (Sialia sialis) performs movement and goes through regional abundance changes throughout the year. Not many North American birds show such unique moves. Do Eastern Bluebirds migrate for the winter?  Some do, and some don’t.  Some populations migrate from the southern and middle states to northern states and Canada to breed; they return …

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juvenile_black-vulture

A Peek at the Private Family Life of the Black Vulture

cuatrok77/Flickr/CC by 2.0 As common as it is there is not a lot of information about the family life or breeding biology of the Black Vulture a.k.a. American Black Vulture (Coragyps atratus). Black Vulture’s nests, eggs, and chicks are well known, but most of this information comes from a relatively small number of nests. Black …

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king_vulture

Vultures in North, Central, and South America

Photo: Raul Vega.  This article is about the biology, ecology, natural history, and conservation of vultures in North, Central, and South America. These include Greater Yellow-headed Vulture, Lesser Yellow-headed Vulture, Turkey Vulture, American Black Vulture, King Vulture, Andean Condor, and California Condor.   Table of Content   Vultures are scavengers. In urban culture, “a vulture” …

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