Sevin dust will kill lice on contact. Others have used coconut oil used to remove lice eggs. You also have to treat the inside of the coop/nests/roosts using sevin dust. Then repeat dusting your birds and coop again in 7-10 days to kill lice tha were hatched from eggs.HELP.....where can I find a photo of lice and mites? I don't know what my hen has but these little critters are a flesh/clear color and crawling all over her butt and vent area and the base of the feathers have the egg clumps... I covered her with Castor oil, her feathers are falling out...her butt and vent area so raw looking ... horrible. I just am not sure what I am treating. I have her in the dog carrier in the house til I can give her a bath in Dawn tomorrow and then what? What do you think they are....??????
Here's a link for you to help you identifying poultry external parasites (with pics

http://edis.ifas.ufl.edu/ig140