Breeding Eggs Research Resources 
10,000 Birds
OCTOBER 21, 2015
Heermann’s Gulls form large breeding colonies on arid islands in the Gulf of California, Mexico, from March through July. The largest colony exists on Isla Raza, where an estimated 90–95% of the total world population breeds 1. This photo by Basar from Wikipedia Commons shows the adult in breeding plumage.
10,000 Birds
MARCH 6, 2018
Scientists were largely limited to studies birds in breeding colonies, at least those we knew about and that were accessible (and, if you think that’s a complete list, you haven’t read the news that came out this week about a new colony of Adélie penguins found in the Danger Islands, Antarctica). Technology to the rescue!
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10,000 Birds
JUNE 7, 2012
A lovely looking and distinctive sounding bird (so they say, I sadly have not seen one…yet), the Kirtland’s Warbler can only be found during its breeding season in Jack Pine forests 5 to 20 years old in the northern Lower Peninsula of Michigan. Previously, even researchers had problems getting access to nesting Kirtland’s Warblers.
10,000 Birds
JUNE 1, 2021
There are sections, ranging in length from a paragraph to two pages, on taxonomy, bird names, habitat, ranges, migration, courtship and breeding, flight, bird intelligence, bird communication; identification; finding birds, life lists; optics and photography; ethics; bird feeding; and conservation. These are all informative and current.
10,000 Birds
OCTOBER 1, 2013
The story of the cahow, a “Lazurus species” that was thought to be extinct for over 300 years and then discovered to be breeding on a tiny remote island in Bermuda, is part of modern birding legend. In 1951, there were 18 breeding pairs of cahows discovered on three tiny islands.
10,000 Birds
APRIL 17, 2012
Oil begins to wash up on the beaches throughout May and June of 2010 May 6, 2010 Oil washes ashore on the Chandeleur Islands off the Louisiana coast, an important nesting and breeding area for many bird species. The babies that hatched from these eggs were released on Florida’s east coast.
10,000 Birds
APRIL 2, 2019
Peterson Reference Guide to Sparrows of North America covers 61 species of the New World sparrow family Passerellidae that breed in Canada, the United States, and northern Mexico. In some species accounts, notably Song Sparrow, this text reads as a carefully researched, finely detailed ornithological/historical essay.
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