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How much bird is there, anyway?

10,000 Birds

For instance, I can lay my hands on data for primates and rodents (because I’ve collected those data for research) but I don’t have comparable data for bovids (just selected data) and zero data for birds (in spreadsheets on my computer). To remedy this, I visited the Animal Diversity Web site at the University of Michigan.

Mammals 182
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A Red-naped Sapsucker and a Townsend’s Warbler

10,000 Birds

Warblers, orioles, kinglets and gnatcatchers have all been seen as have small mammals such as Pine Martins, bats and Red Squirrels but seldom, it seems, is the behaviour documented. I changed to a position further up the slope which allowed me to get a better angle on the top of the branch and bear out my supposition.