2007 Breeding Document Species 
10,000 Birds
SEPTEMBER 8, 2023
An associated issue is that the Belize and Costa Rica guides share many of the same descriptions of species, written by Howell. Similarly, descriptions of species repeated across volumes do not lose their accuracy with each publication. Other species are splits and lumped and have had their names changed. Why are these issues?
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
DECEMBER 6, 2016
Peterson Field Guide to Birds of Northern Central America covers 827 species, including resident, migratory, and common vagrant birds. The end result is that the whole “biographic” area (NCA plus southern Mexico and northern Nicaragua) is home to 41 endemic bird species.
10,000 Birds
MAY 7, 2019
So, for example, Essay #15, “Individual Variation,” uses Herring Gulls to introduce the concept that one species, even one species at a specific age, can vary widely in appearance. The Checklist is more than a taxonomic listing of species and chapter number and title; it also contains useful notes on each bird family.
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. The 39 owls include five endemic Caribbean species.
10,000 Birds
JANUARY 13, 2012
The New Jersey Bird Records Committee (NJBRC) documents 465 species of natural origin. Used in conjunction with the species distribution maps, this is a helpful feature in evaluating field observations. There are, sadly, entries for extinct species. That Cattle Egret I found in Somerset County, August 2009?
10,000 Birds
DECEMBER 4, 2018
The hope and claim is that transferring this process to gull identification works more easily and just as accurately (at least for species) as an examination of plumage and molt patterns. Species Accounts. Gulls Simplified covers 25 species. And, then there is a Hybrid Gulls chapter, covering five well-documented hybrids.
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