A crossover Quaker Scuti (F), A Sun conure named AC, A Cinnamon Green Cheek conure Kent, and 6 budgies, Scuti Jr. (f), yellow (m), clark Jr. (m), Dot (f), Zebra(f), Machine (m).
I bet your right cause it looks like the feather is growing out through a little straw. Thank you very much I think she is quite pretty also. She has some nice red on her tail feathers too.
Either it's a weird pin feather (it may have been damaged while it was developing), or it's PBFD. Aren't I just a pleasure to talk to . Noah sometimes gets weird pin feathers on his head (sometimes they're ingrown, and they take over a month to finally poke through properly). Since this is the only weird feather you've noticed so far, it's probably not PBFD.
From my experience, sometimes feathers just don't form properly. Although, this could be a sign of an infection or nutrition issues. My kākāriki have some really weird feathers. I keep finding flight feathers with fat, yellow, misshapen quills. Like, some of these feathers are "hooked" like a fishing hook at the tip where the feather is attached to the bird. One of these feathers even had a "tissue plug" attached to it. I can't begin to imagine how painful it is to moult those messed up feathers.
Anyways, I showed them to Dr. Yee, and she hasn't really seen anything like them before. She says it's probably due to malnutrition or infection, and that we'll have to see how they look after the kākāriki heal more. The kākāriki were extremely sick when I adopted them back in March, and Ria's still suffering from the affects of malnutrition. Her choanal papillae are extremely blunt, which is indicative of vitamin A deficiency (again, my poor kākāriki came to me with these health problems). Luckily, Tiki's papillae a sharp and spiky.