1)If a Bechor is born with a mum, is the chiyuv to give it to the Cohen is still in effect?
2)What if the mum developed after birth?
3)Any wool or other items removed from the Bechor should it be given or returned to the Cohen?
Shabtai Nacson, Toronto,Canada
1) A Bechor Ba'al Mum is given to a Kohen, even born with a Mum.2) The same applies if the Mum comes after birth. 3) The wool shorn off a live Bechor is Asur both for a Yisrael and a Kohen.