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Pied Oystercatcher breeding update

10,000 Birds

Egg loss to predation has been extraordinarily bad this year and all of the nests mentioned in the last post were lost and all of the pairs of Pied Oystercatchers laid a new clutch of eggs. In fact they have not just laid once again, but many pairs have laid up to five clutches of eggs this season.

Breeding 134
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Into the Nest: A Book Review in the Time of Nesting

10,000 Birds

Third, observing and photographing breeding birds and their young have become acts of ethical confusion as birders, photographers, and organizational representatives debate the impact of our human presence on the nesting process. And of eggs and nests and birds on nests. Cedar Waxwings exchange berries, carry nesting material, eggs.

Eggs 263
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Bird of Prey: The Story of the Rarest Eagle on Earth – A Film Review

10,000 Birds

I couldn’t help thinking this–me, the anthropomorphism hater– as I watched a pair of Philippine Eagles tend their nest, raise a chick, and tear monkeys apart in Bird of Prey: The Story of the Rarest Eagle on Earth , a well-crafted, beautifully filmed documentary with a mission. The Philippine Eagle has a kind face.

Eagles 203
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Pied Oystercatcher broken wing display

10,000 Birds

We are into the second attempt at breeding for this season in Broome for Pied Oystercatchers. The first eggs are laid during the first week of July each year and if these eggs fail to hatch or the chicks are lost they will lay further eggs within a few weeks. Nest site with 3 eggs-one white!

2002 166
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Questionable Practices at the Calgary Zoo

Critter News

Another animal dies at the Calgary Zoo and more questions are being raised about their practices. In April 2009, unseasonably cold weather froze two whopping crane eggs. They were a part of the zoo’s breeding program for the rare birds. I don't track zoos, but this seems like an unusually high number of casualties.

Zoos 100
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Polyandry and Polygynandry on the Tundra

10,000 Birds

Many of the most peculiar aspects of birds are involved with mating, whether it’s for attracting mates, defending nests against predators, or raising chicks. One of the more interesting aspects (in my opinion) of breeding in birds is their mating strategy. of all bird species, is polyandry. 1996, Nakamura 1998). 1996, Nakamura 1998).

2002 163