I lost 20+ chicks (5 or so to each snake, 12 to panic) in 3 days last week. A 1" hole for a waterer in the baby cage was too much. Both snakes were unable to get back out and didn't live to tell. They were non-venomous, but that level of losses is just not acceptable
All baby cages are now snake proof, but I'm not taking any chances. The little silly birds were so funny. The second snake was so stuffed it wasn't moving. No babies died from panic with that one and they were STANDING ON IT when I found it. I guess they figured it was full & safe..silly babies!