Hatchery Black Jersey Giants can have the wrong feet. Australorp males are also big with great personalities. I'd just let him finish growing out and see if he's whopper enough to be a Jersey Giant. You are correct on the other two boy breeds, RIR and Buff Orpington.
I have some follow-up on my large bantam batch order from Cackles this year in August re: Cochin Bantam genetic issues comment reply above.
The August 2025 Mille Fleur d'Uccle Bantams I ordered appear to have a genetic predisposition toward nutrient deficiencies. I feed flock raiser 20% and...
Still too little I think. With my silkies, I find posture is a good indicator, does one stand low versus observe high up with a straight neck? The taller behavior is usually a rooster.
I agree, there's no point if the bird already lives right next you and is already interacting directly with your flock. A quick look over and anti lice treatment would do it. It would be sad to see a predator get her. I feel like this is more common with roosters who come across unwed lady flocks 😂🧡