Bees kill them selves (Suicidal bees?)

If you have magmablocks, then bees will (unlike any other mobs that will not walk on to them unless pushed) volentarily momentarily land on the magma blocks and take damage, after a number of days they eventually die from doing this.

 

FIX: bees like any other mob should try to avoid damage to self by staying away from magma blocks.