I bought 4 chicks around 3 weeks ago and they were all 2 - 2.5 weeks old. They were all about the same size except one which was slightly smaller however over the last three weeks the others are almost double its size and it has only grown a little from when we first bought it. From what I can see it is eating and drinking fine (and it loves to eat worms) it should be approx 5 weeks old but it doesn't look it. I have read somewhere that it could be a dwarf chicken. could it? I am worried that if it is a female it wont be able to lay healthy eggs. Any help would be greatly appreciated.
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As you can see in the pictures it is a lot smaller than the other chicks.
(It is a Pekin)

As you can see in the pictures it is a lot smaller than the other chicks.
