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Flock to Marion

10,000 Birds

I learned of the trip right as it had been delayed and made a vow that I would be on that ship. Well, cats are just as successful breeders as mice and soon there were thousands of cats that sought out prey bigger than mice and began to wipe out the native seabird population. Just get rid of the mice.

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Big Day Birding in Costa Rica- Strategies and Constraints

10,000 Birds

We have to figure out when the highest numbers of migrants coincide with resident breeders to increase the probabilities of breaking the previous record, or to at least hit your Big Day birding goal. However, it also has to give a reasonable chance at identifying all of those birds and that means enough time in the right spots.

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The Fate of the Florida Anis

10,000 Birds

In addition to having a communal nesting strategy, anis also spend a significant amount of time allopreening, huddling together, and sunning themselves together on exposed branches. Smooth-billed Anis were relative newcomers as breeders to Florida, having only begun nesting since the 1930s. Diet is composed mostly of large insects.

Florida 199
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Rails: The Once and Future Kings of the Pacific

10,000 Birds

They often become slower breeders, and most importantly, they lose their ability to disperse, meaning they get stranded on the island they live on. In a few places mammals and humans may endure, but even there, rails will become island species, albeit ones that retain some anti-predator strategies. What a horror! What a disaster!

Hawaii 210
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Polygynandry and avian swingers

10,000 Birds

Swarovski ATM scope & Canon A590 Now Alpine Accentors have a much more interesting strategy: 3-5 males defend a single breeding territory, containing 2-3 spatially separated female Accentors. Alpine Accentors, on the other hand, are not cooperative breeders and females typically have very little to do with each other.

2011 218
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New York State Big Year?

10,000 Birds

What strategies are you using? then eventually you’re going to see most of the residents, spring migrants, wintering species and regular breeders. Right now I’m thinking I’d love to see (or just hear) Yellow Rail , or perhaps Black Rail. Good reasons to stay local regardless of records and the like. Lots of pelagics?

New York 177
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Our Best Birds of 2020

10,000 Birds

Common Cuckoo is a fascinating bird, an obligate parasitic breeder that employs numerous strategies, including fraud and murder, to survive. I also put it to a worthy first field test on December 29th during a successful twitch of an Arctic Diver that had turned up at a small lake right next to Heidleberg.

2020 241