I got 3 white call ducks yesterday. They were confined to a small caged area all winter. Boy are they yellow and crusty! Can I bathe them with shampoo and if so will it wash away all their natural oil? They are now in a large covered outside pen with doghouse for sleeping in. I gave them a small pan to drink out of. It is thawing out here in Indiana and snow is melting... Would they get too cold if I bathed them... Thanks for any replies!