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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.)) Might I assume that women typically bear fewer children, or fewer survive? small families putting less pressure on the adult members of the family).

2011 209
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A Comparison of Birding in Costa Rica and Eilat, Israel

10,000 Birds

Here are some: Mega migration : We bear witness to some serious migration in Costa Rica. This is a serious issue around Eilat and seems to affect local resident breeders more than migrants. Everything else was vastly different (as might be expected when comparing the xeric Rift Valley with humid Central America).