Years ago I tried to feed small quail chicks.
This was my experience of that:
If you feed prey as big as the snake is able to swallow it might be unable to digest. I had two females that defecated quali parts undigested.

BTW: I found it intresting that three females needed different time to swallow:
first a ´parietalis was busy for 45 min., a ´sirtalis Florida Blue needed about 30 min. but my ´vargrans female swallowed her piece in only 10 minutes