I think is clear the title is implying adaptive tool use, the bird had a specific need and found a specific tool for it, in the other hand nests are behaviors d

I think is clear the title is implying adaptive tool use, the bird had a specific need and found a specific tool for it, in the other hand nests are behaviors deeply integrated in the genes of a species seen in almost every member of it even when it doesn't make any sense, that's why 'pet' beavers try to irrationally build dams in places without water.