Photo essays on what animals actually do, written from the research rather than around it. Each one makes a claim and says how far the evidence goes.
The satin bowerbird builds a bower to prove he is fit. Then he goes and takes the best pieces of everyone else's — specifically the ones darker and more UV-reflective than the ones he collected himself.
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At the edge of the ice, a colony of penguins waits. The hesitation looks like fear. It is closer to arithmetic — and the animal that breaks first pays for everybody else's certainty.
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