Weird Looking Chick, Id help please

Gosh, I don't know but your chicks are all adorable!

 

I would guess a white rock.

 

The white rock is in the foreground, I assume, and its tail is so much longer. I can see why you would think this bird is different. Almost looks like a white cochin would at that age, except the feet are not feathered. Does Murray sell white jersey giants? Or maybe a white cornish of some kind.

 

She's not a white jersey giant. I've had two from McMurray, and they were dark gray as day-olds, then feathered out white. The legs were also dark, not yellow. Surely McMurray wouldn't have put a white leghorn in with your brown layers... that chick looks just like my leghorns, who get tall and lanky very quickly, though they did feather out more quickly than your chick. They're very fast maturing, so they get their full size very quickly. I've got 4 9wk white leghorns in the pen now, and they're my tallest chicks.

 

I have an idea. Could it be a delaware? On feathersite, a lot of the delaware pullets have very little black in them. The McMurray catalog shows the chicks as little yellow puffballs, some with black, and some without. I've never had a delaware, though, so I don't know how quickly the black shows up.

http://www.feathersite.com/Poultry/CGD/Dels/BRKDelawares.html

 

Here's a thread on here with some pictures of delawares, and descriptions of color differences.

https://www.backyardchickens.com/forum/viewtopic.php?id=59734