Breeding Course Document Eggs 
10,000 Birds
JULY 17, 2012
Green-rumped Parrotlets: from egg to adult Text and photographs copyright Nick Sly (except Rae Okawa where indicated) and are used with his permission. You don’t really know a bird until you’ve studied it on its breeding grounds. I present here an annotated collection of photos documenting the entry of new parrotlets into this world.
10,000 Birds
APRIL 2, 2013
A breeding bird atlas is a special kind of book. For ornithologists, it is the documentation of a multi-year project designed to record the distribution and abundance of birds in a specific area (in North America, usually a state or a province), utilizing a mapping method involving blocks and grids.
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10,000 Birds
JUNE 19, 2013
Even though the overall breeding range remains largely unchanged from that in the 1940′s, the entire coastal population has been in recent severe decline. The ecological requirements for Black Swifts to breed restrict them to a very limited supply of nesting locations.
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. A particularly good type of fertilizer, for example, drastically increased the population of crabs, spoiling Bermuda’s golf courses.
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. Green-striped Brush Finch, a Mexican endemic) to 14 pages (Song Sparrow, of course). Of course, Wright approaches identification from a historical viewpoint.
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. The warbler is on the road to being delisted from the Endangered Species List.
10,000 Birds
FEBRUARY 20, 2023
Feel free to insert your own French joke here (though of course in the US, restaurants now serve Freedom Frogs rather than French Frogs). The breeding ecology of the Yellow-bellied Warbler was actually studied exactly here at Nonggang in 2019 by 3 Chinese researchers. This included recording a total of 77,760 minutes of video.
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