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Half Hardy

10,000 Birds

When I began birding with people from parts farther north I became familiar with the term “ Half Hardy “, which refers to those species of birds who are generally present in small numbers during mild winters, but usually can’t handle the rough patches of extreme cold temperatures and snow that are less frequent.

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A Problem with Gulls

10,000 Birds

Collectively, they’re referred to as the Herring Gull complex. References in original]: [T]he taxa regarded by Mayr as subspecies of these two are now regarded as distinct enough to be regarded as separate species. argentatus as reference. This wiki looks good too.] michahellis. michahellis Caspian gull L.

2011 157
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Polygynandry and avian swingers

10,000 Birds

Nice. ((** all names have been changed to protect identities and have been substituted with (almost) randomly chosen substitutes suitable for a family of Alpine Accentors.)) small families putting less pressure on the adult members of the family). Do you know of any references for this? yes you, Dawn, coy.

2011 225