How much bird is there, anyway?
10,000 Birds
JULY 21, 2011
A single large spider monkey, which might be out of view, equals a large number of lightly built and small birds which may be scattered across the landscape. Oxford University Press. This is also because mammals are large. A little bit of bird biomass goes a long way. Where the abyss touches the sky: A Booby and Noddy ecosystem.
172 
Let's personalize your content