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Polygynandry and avian swingers

10,000 Birds

Dale Forbes Mar 16th, 2011 at 8:37 am Hi Laurent, that is a fascinating example of humans responding to difficult environmental challenges. In the case of Acorn Woodpeckers, they are cooperative breeders (as with many other polygynandrous species), which seems to predispose species to polygynandry.

2011 209
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Birding Shanghai in April 2023

10,000 Birds

Apparently , the two main factors influencing double brooding are the individual quality of the breeder and the timing of the first clutch. The captor monkey killed the bird … by biting off its head” Eurasian Woodcocks are much more likely to be killed by humans than by snub-nosed monkeys. Who are these weirdoes?

Monkeys 147
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Combined Beats’ List – September

10,000 Birds

All birds are equal on this list; parking lot birds or pelagic species, breeders or fly-overs, all will be accorded the same status and each shall be worth 1 credit on the list. Eurasian Blackbird – Turdus merula. Chinese Blackbird – Turdus mandarinus. Red-winged Blackbird – Agelaius phoeniceus.

2016 154
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Combined Beat list for 2016

10,000 Birds

All birds are equal on this list; parking lot birds or pelagic species, breeders or fly-overs, all will be accorded the same status and each shall be worth 1 credit on the list. Eurasian Blackbird – Turdus merula. Chinese Blackbird – Turdus mandarinus. Red-winged Blackbird – Agelaius phoeniceus.

2016 120
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Combined Beats’ List, May 2016

10,000 Birds

All birds are equal on this list; parking lot birds or pelagic species, breeders or fly-overs, all will be accorded the same status and each shall be worth 1 credit on the list. Unicolored Blackbird – Agelasticus cyanopus. Eurasian Blackbird – Turdus merula. Chinese Blackbird – Turdus mandarinus.

2016 100
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Combined Beats’ List – August

10,000 Birds

All birds are equal on this list; parking lot birds or pelagic species, breeders or fly-overs, all will be accorded the same status and each shall be worth 1 credit on the list. Eurasian Blackbird – Turdus merula. Chinese Blackbird – Turdus mandarinus. Red-winged Blackbird – Agelaius phoeniceus.

2016 101
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Combined Beats’ list

10,000 Birds

All birds are equal on this list; parking lot birds or pelagic species, breeders or fly-overs, all will be accorded the same status and each shall be worth 1 credit on the list. Eurasian Blackbird – Turdus merula. Chinese Blackbird – Turdus mandarinus. Red-winged Blackbird – Agelaius phoeniceus.

2016 100