I can usuallly tell, I don't know why. I can feel feet sometimes and other times a back. it is hard to tell bum from head but I even had two midwives and a dr have to do an us to tell bum from head with DS ( theres a story for him when he is older)

This bub is lying transverse and seems to love this position, everythime I get her into head down she gets back into this transverse possy