That is very interesting!
I never thought of that. Come to think of it, whenever Bitty has her quiet preening times, she is usually parked in one of the corners.
Makes sense!
Learn something every day.
On a sort of related note...I am an avid fisherman. One of the most hard to use live baits is Shad. Shad can't be kept alive in a live well with corners (which most boats have). The whole bunch of them will crowd their noses into the same corner and asphyxiate from the low oxygen. You have to get a special round well so they keep swimming round and round.
Funny how it works the opposite.