I have a blue cochin that is almost 8 weeks old and STILL is mostly fuzz, and tiny. All the others look like chickens, he/she is still in the dinosaur stage. No problems eating and drinking, she/he is always one of the first at the trough and I hand feed to keep them tame so I know food isn't the issue. The other cochin chick (same batch) is twice the size and although slower than the rest to feather has way more than this chick. I think it will be fine in the next couple months.