Opportunistic feeders. That might explain things. So for frogs of this size, should I be giving them 30 twice a week? Or is that too much? Feeding them once a week seems to leave them pretty skinny at the end of the week.

I hurt my back and can't get down to the basement today, but I would guess the window well to be bigger than 3'x3' but not bigger than 4'x4'. After spending most of their lives in there (they were about 2" nose to butt when they appeared there) I think they would be traumatized to be taken out. Plus, they get regular food and a tub of water and places to hide regularly where they are now lol. The little one I caught last week (in the yard, didn't want to mow him over) and put in the garden on the other side of the house doesn't have such assurances. The drain (or something) holes are deep enough that they have been hibernating down them in the winter the last several years.