Breeders Breeding Eggs Reference 
10,000 Birds
APRIL 25, 2012
Most of the Osprey breeding in North America are migratory, only Florida, the Caribbean and Baja California host non-migratory breeders 1. In migratory populations males usually arrive to breeding grounds a few days before the females and look for nest sites. This pair copulated several times while I was observing.
10,000 Birds
SEPTEMBER 9, 2015
The nickel was placed in the nest for the photo to show me the size of the egg for identification purposes, then removed. The Mourning Dove is a prolific breeder. References: 1 Birds of North America Online , 2 Droege, S. North American breeding bird survey annual summary 1989, 3 US Fish & Wildlife Service.
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10,000 Birds
FEBRUARY 29, 2012
Most Acorn Woodpeckers are cooperative breeders and live in family groups of up to a dozen or more individuals. Within a group, 1–7 male co-breeders compete for matings with 1–3 joint-nesting females who lay their eggs in the same nest cavity. References: 1 Birds of North America Online a.
10,000 Birds
APRIL 7, 2020
It didn’t occur to me till I started reading The Falcon Thief: A True Tale of Adventure, Treachery, and the Hunt for the Perfect Bird that there was also a possible threat to the eagle herself: poachers, who steal raptor eggs and chicks. McWilliam realizes he’s dealing someone special, a career falcon egg-thief.
10,000 Birds
JUNE 24, 2024
Research required to determine its feeding ecology and breeding biology.” ” “Breeding Mar–Jun. The species is a cooperative breeder – birds other than the parents help feed the chicks. ” And why not. The HBW entry is basically a list of things not known about the bird: “Poorly known.
10,000 Birds
MAY 1, 2023
To be honest, both the robin and the flycatchers shown above remind me of the easter eggs I hunted for as a child – the same strong colors in front of a green background, same time of the year (feel free to insert your own Proust Madeleine reference here) … Bluethroats apparently are good at imitating other birds.
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