Failure to thrive or just slow to mature ?

[Hazel feather]

Blorpie ( the blue Orpington ) on far left is the side is expect a 15 week old Orpington cockerel to be. Glorpie ( golden laced Orpington ) in the middle on the other hand is quite small , not completely feathered and her proportions seem wrong . And finally barnie ( barnvelder ) seems even smaller ! Her feet are tiny and she is missing feathers in a few places . None of the three have tails ! I’ve never had any of these breeds , so is this failure to thrive in Glorpie and barnie or are they just slow to mature ? All three hatched on the same day and around the same side as each other .
( it sound like I ran out of names for chickens but honestly I think these names suit them )

 

[oldhenlikesdogs]

They do look a bit unwell. They are more fluffed up like they are cold. They could be dealing with coccidiosis. Are their droppings loose? Are they all the same age? What are you feeding?

 

[Hazel feather]

Thanks for the reply!
They are all fifteen weeks old . The are eating a mixture of growers mash and layers pellets and free range during the day. Their droppings are normal .

 

[oldhenlikesdogs]

They probably should just be eating the grower for a few more months. The two don't look like they are 15 weeks. They look to be 4-6 weeks behind. They could be runts, or had something wrong that stunted their growth for a while. They should eventually catch up, but may be smaller overall.

 

[StinkyAcres]

How long have they been fed layer feed?

 

[Hazel feather]

Ok ! I’ll put them back on growers feed .

 

[Hazel feather]

They’ve been eating layers feed for about two weeks now .