Can you get some photos of all of her?Picture of the molting with new feathers coming through.
She is a lot thinner than my other silkie, but is eating and drinking still
She is no longer roosting at night, she sleeps in a nesting box. I need to fix the perches as there is not enough room.
It's 30'c today and i caught her lying in a nesting box in the hen house, she was hot (panting). I've closed the hen house - other girls have laid today. Not sure why she'd be in the nesting box
what can i give her to fatten her up ?
You're temps are in the 80's (F) or 30's (C) so that's pretty warm for a bird that is stressed from molting.
I would focus on provide her a bit more protein, not fattening her up. Molting birds don't eat very well, so provide her with her normal nutritionally balanced feed and a little egg, meat or fish as a treat.
You can make her a wet mash of feed adding in a little buttermilk or yogurt to tempt her, mine love that. I also like to give extra vitamins 1-2 times a week during molt. You are in AU, so you may be able to find Nettex Nutri-Drops or other avian vitamins if you have those. If not, you can give her 1/4-1/2 tablet human B-Complex, I usually give mine a vitamin E capsule as well if I'm not giving a poultry vitamin.
She's only 10-12 months old, but she's been broody. Once they come out of broodiness, they molt.
Just keep watch on her and take note that she is staying hydrated and eating something.