10,000 Birds

MAY 19, 2022

First, that new pair of bins for testing arrived, of which you will be reading in a due time, and two days later, the Global Big Day. A few Eurasian Tree Sparrows land by my car as I am scanning for Purple and Squacco Herons , Pygmy Cormorants and Black-necked Grebes in their brilliant breeding plumage. Where to go?

Mules 205

Mules Breeders Farming Fish 205

10,000 Birds

SEPTEMBER 9, 2015

The Mourning Dove is a prolific breeder. Even though the female lays only two eggs per nest attempt, they enjoy a protracted breeding season in which multiple nesting attempts can occur every 30 days, and in Southern locations, nearly year round. population has been estimated to be approximately 350 million 2.

Hunters 175

Hunters Hunting North America Game 175

10,000 Birds

JANUARY 7, 2020

The authors’ detailed delineation of problems with the accuracy of NYC breeding bird surveys or with the limits of historical writings may test a reader’s patience. The first three sections are brief, presenting a summary of the bird’s current NYC status (migrant, resident, breeder, vagrant, etc.), Eaton, and John Kuerzi.

New York City 148

New York City New York Birds Breeding 148

10,000 Birds

JULY 26, 2015

alba : yellow in non-breeding season (usually less bright than egretta ), entirely black in breeding season. When I am assessing a significant observation and am testing my own reliability after the fact, I find that absolute field marks are by far more useful than relative characters.

North America 171

North America Europe America Asia 171

10,000 Birds

MARCH 6, 2011

Like manky mallards, ganky geese display remarkable variety due to both the methodical manipulations of breeders and the variable volatility of the more natural kind of breeding. Feral geese run the gamut from pure white to almost entirely gray or brown. We certainly see enough of them, don’t we?

Geese 145

Geese 2011 Deer New York 145

10,000 Birds

FEBRUARY 18, 2014

The vast majority of the 10,000+ living species of birds are passerines, and the vast majority of those have a similar system of breeding: Mom and dad bird make a nest and share parental responsibilities roughly equally, if not identically. …because cooperative breeding facilitates defense against brood parasites.

Breeders 198

Breeders Breeding Science Raised 198