Last night I grassed a 10 month old yearling buck, he was pretty skinny (24lb clean) but the main thing I noted was that his neck was almost completely bald. Thinking that it could be a parasite thing, I really went to town on an external check but all I found was about half a dozen ticks in the groin, no keds, no lice and the skin on the neck looked fine, not mangy or scabby. He certainly seemed healthy though, normal behaviour, all the internal organs were clear (apart from the heart/lungs) but he was carrying no condition at all, not even a white smear on the kidneys.
Do deer get mange? Any ideas what could cause the baldness?