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marmorset t1_jcdy7ex wrote

Reply to comment by [deleted] in TIL: Black Herons turn their wings into an umbrella to “canopy feed”. The umbrella provides shade, which draws fish to the surface where they can be seen and caught more easily. by Geek_Nan

No, but I didn't then decide to fish. And the sun isn't in their eyes, they're doing it because the fish prefer shaded areas. That's a whole different level of thinking. My hand blocks the sun, now I can see better, versus, my wing blocks the sun, now a separate animal will change its behavior.

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