I was quite amused a while back while at our local nature reserve, watching an egret and a heron occupying the same patch of shallow water. They were both fossicking about feeding in a desultory sort of way, and they simply didn’t seem to see one another. They passed so close to each other from time to time that a cursory glance might have seemed in order. Nothing. Here they are:
Here are a few more unrelated birds showing they really have no interest in each other at all.
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