So one of our two 9-week-old Wellsummers seems obviously to be female. The 2nd one however...! Thank you in advance for any feedback. This is the first time we've ever had this breed, so we're struggling a bit... The size differential between the 2 isn't as stark as it appears to be in the first pic, however.. When we first got them the 2nd chick had practically no tail feathers. Gradually, they outgrew hers.