In North America, nine distinct red crossbill variants (referred to as call types) differing in vocalizations as well as beak size and shape are recognized. Each call type evolved to specialize on different species of conifer."
Very cool, I should have paid attention on what type of conifer these were on. Apparently most are Fraser Firs or Red Spruce.
I have heard that Red Crossbills will sometimes come down to the roadways or trails to eat grit which helps to digest the seeds that they feed on. Well last weekend I was able to witness this at the Mt Mitchell Ranger's Station.
This poor individual had Bumblefoot which is a bacterial infection that commonly affects birds.
A family unit. The male is red, the female is orange and the juveniles look like overgrown Siskins.