I've watched a few tutorials where eggs are dispensed onto a half slab (above hopper etc.) with lava above it so that when the chicken grows ...... zap - chicken & feathers.
I understand the principle and have tried various models on my 'test out ideas world'.
But the same problem keeps recurring - when the chick grows enough to touch the lava, it squawks and jumps up into the lava instead of just setting on fire and cooking. So it's vapourised and nothing goes through into the chest. I've tested the collection mechanism - stuff dropped on the slab ends up in the chest. The egg dispenser works - chicks spawn on the slab. Arrrrrrgggggghhhhhhh ..............
Any thoughts? Advice? Am I missing something?
If my browser would let me I'd post a screen shot so you could see what I've built.
It seems that enlarging the space underneather the lava (3x3 with a hole for them to drop through in the middle) stops them from jumping.
Only problem is that if only a few chicks in there they all bunch up in the middle where there's no lava on top. Ah well, such is Minecraft