How much bird is there, anyway?
10,000 Birds
JULY 21, 2011
But it happened at that moment that a lot of what I was looking at was avian in nature: a few crows, some sparrows, blackbirds, and other run of the mill inner-ring suburb fliers and flitterers. Here’s some data from the famous research project of Manu, Peru, giving biomass in kilograms per hectare.
177 
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