I have 2 baby corn snakes 8 grams each newly purchased. I have offered them 1-day old mice pinkys and they eat them down without a problem. 1 or two days later, they regurgitate them up. Are the pinkys too big? Should I be cutting their heads off or something? This has happened twice now.
A third baby corn weighing 16 grams is keeping her food down - so far.

Any suggestions would be appreciated.

Thanks - Andy