Just did a quick look-up and I understand from the pictures and the text why you would go with Toulouse Production. My female is a little slender though and she can fly around the farm yard and over the fences. She doesn't go high or far but can fly the length of an acre without difficulty. Does that fit within the TP parameters?I don't know. I think they are well old enough to show a knob if there was one going to develop. I don't see any knobbiness about them. I took a good look at them today after looking at a lot of pictures online and reading up on the greylags and it looks like a good fit. From what I read there are a lot of spin-offs from the greylags that have been bred in many countries, and the "greylags" in the US don't necessarily look like the European originals. I have very little experience though, and my reading on the subject is limited. I will google on the T. Production so I can an idea of them. Thanks for the input.