BlueRaider731 t1_jccg5pi wrote
Reply to comment by marmorset 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
Wonder if they’ve got worse eyes, such that they can only see in shaded areas.
marmorset t1_jccr94v wrote
That's an interesting theory.
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