America Breeding Mexico Research 
10,000 Birds
MAY 20, 2020
I have commented before in my posts that most of our Warblers here in central Mexico never actually warble. That still leaves 11 Warblers that breed in Michoacán. Like the Common Yellowthroat , the Yellow Warbler breeds no further south than the central Mexican highlands. It does breed in the U.S. But do they warble?
10,000 Birds
JUNE 1, 2021
And now we have the third iteration in Audubon’s guide book history: National Audubon Society Birds of North America. The National Audubon Society Birds of North America covers all species seen in mainland United States, Canada and Baja California. I didn’t.). This is a fairly large book: 907 pages; 7.38 GUIDE COVERAGE.
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10,000 Birds
OCTOBER 6, 2015
Here are some things I’ve learned from the Peterson Reference Guide to Owls of North America and the Caribbean by Scott Weidensaul: The Burrowing Owl is the only North American owl species where the male is larger than the female, albeit, only slightly larger. And the term is ‘non-reversed size dimorphism.’).
10,000 Birds
APRIL 2, 2019
So, I was very excited when I heard that Rick Wright was writing a book about sparrows, the first treatment of North American sparrows since 2001, possibly the first book about sparrows of North America, depending on your definition of that geographic area. Mexico border. They’re all birds of North America!
10,000 Birds
SEPTEMBER 8, 2023
The first is that the illustrations by Dale Dyer are based, and largely seem to be the same, as the illustrations for his previous guide Birds of Central America: Belize, Guatemala, Honduras, El Salvador, Nicaragua, Costa Rica, and Panama (co-authored with Andrew Vallely, PUP, 2018). Why are these issues? Doing this work takes time!
10,000 Birds
MAY 17, 2016
I want to alert you to a recent study (from April) that looks at the plight of bird populations under conditions of climate change in Europe and North America. Data were collected from the North American Breeding Bird Survey and the Pan-European Common Birds Monitoring Scheme. Why are Europe and North America different?
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. v=FUBX_tlHySc.
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