We have a Spreckled Sussex, about 3 months old that doesn't seem to be growing. She eats and drinks but isn't getting any bigger- she's about 1/2 to a 1/3 of the size as the others who are the same age. She still peeps a lot more than the others too. I thought I'd see if she'd catch up but I'm getting worried. Her fluight feathers look big and her beak too but she's pretty skinny. When she's out she's active but she does squint a lot and sleeps a lot too. She can definately see because she's still eating and moving around. Any ideas?