You see pigeons and other birds go mad when a bunch of breadcrumbs are thrown on the ground, but seem to know not to go for small rocks, earth, and other non edible things even if they were to be thrown in the same way.
Maybe I’m just underestimating the intelligence of pigeons or their keen eyesight? But they seem to know almost instantly what they can and can’t eat.
In: Biology
Howe do you know a pizza is edible but a dinner plate is not?
It is from a combination of good eyesight and past experience.
Birds build up an understanding of the kinds of things you find on the ground and usually know at a glance whether it is something they have eaten in the past or not. . Occasionally you see a bird pick up something unfamiliar, discover it is not edible and drop it. Now it knows and wont make that mistake again.
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