California Eggs Research Species 
10,000 Birds
APRIL 2, 2024
Osborn, a passionate field biologist who participates to the core of her being three re-introduction projects aimed at saving three very different, endangered species: Peregrine Falcon, Hawaiian Crow (‘Alala)*, and California Condor. Endangered. Extinction. Conservation. This is the most intense, tragic section.
10,000 Birds
AUGUST 3, 2021
There was a time when I thought each bird species had its own individual song. Then I found out that there was this vocalization called a ‘call,’ so I thought each bird species had its own individual song (but just the males) and individual call. There’s more than one song per warbler? How do they know?
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10,000 Birds
FEBRUARY 8, 2017
Breeding bird surveys appears to show the resplendent Allen’s Hummingbird (like Corey’s capture, above) in decline—but not in Southern California, where examination of eBird data reveals that members of a residential population appear to be faring much better than their migrating brethren. (To sports championships ).
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. Isla Rasa was declared a sanctuary in 1964, and egg-collecting and disturbance during the breeding season are discouraged. It’s all of the things I learn about different birds from researching to write posts.
10,000 Birds
SEPTEMBER 9, 2015
Their habitats vary widely in both rural and urban landscapes; open habitats are preferred and the species generally shuns only extensively forested areas and wetlands 1. To show how adaptive this species is, the following photograph was sent to me by one of my readers and I use it with her permission.
10,000 Birds
JUNE 1, 2021
Pough “with illustrations in color of every species” by Don Eckelberry, Doubleday, 1946. The National Audubon Society Birds of North America covers all species seen in mainland United States, Canada and Baja California. The press material says it covers over 800 species, so you know I had to do a count.
10,000 Birds
MAY 7, 2014
According to Wikipedia, birds (class Aves) are feathered, winged, two-legged, warm-blooded, egg-laying vertebrates. Most researchers agree that modern-day birds are the only living members of the Dinosauria clade. After all, they are the species that got me started building nest boxes in the first place.
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