We think they might be Golden Campines. I hope this will help you. Found my way to your website through the Poultry Information Exchange. I suspect the birds are Brown Leghorns, but could use some expert opinions. The birds are a pretty mottled brown, with golden neck feathers.
Combs are small.
Body type is long and lean. Tail is prominently held, almost like a fin. Fly very well, roost up high on the rafters of the henhouse. No eggs yet. I hope this will help you.