Baby chick won't grow

[bigz1983]

Hey everyone I have a 3 week old Blue Amerucana(not EE)that is 3 weeks old and it is still the size of 2 day old chick.
It is with 3 other Amerucana chicks same age and the others are growing normal.
Is there any hope for it?
Is there anything I can do to make it grow?

 

[sourland]

Some chicks just exhibit failure to thrive. I have had some that eventually grow but not as large as hatchmates. Others just fade away. You might try vitamins, but I doubt that it is caused by your husbandry.

 

[bigz1983]

Some chicks just exhibit failure to thrive. I have had some that eventually grow but not as large as hatchmates. Others just fade away. You might try vitamins, but I doubt that it is caused by your husbandry.

Ok I looked up "Failure to thrive" and I believe that's what we had.
The chick passed away today it was 3 weeks old.
It didn't grow and had constant pasty but that needed cleaned.
We have got 2 sets of chicks from the same breeder(Amerucanas).
The first set of 4 Pure bred Amerucanas back in early May we had
1 failure to thrive,
1 cockerel of the wrong breed(French Crested Crevecoeur),
1 cockerel of the right breed we wanted(Amerucana) and
1 pullet(Amerucana)
The breeder gave us 1 free Amerucana chick replacement for the accidental French crested Crevecoeur 3 weeks ago.
So far the second set we have 1 failure to thrive and
3 healthy looking Pure bred Amerucanas(I hope they are lol)
Man 2 failure to thrives out of 2 separate batches plus a breed mistake I'm done dealing with that breeder.
She needs to figure out the genetic issues in her breeding stock or something.
Plus learn her breed's she sells...lol
Thanks for the help.

 

[Megaletta]

Hello, sorry about your loss.

Would I be able to see a pic of your remaining chicks? I’m trying to judge if mine is on track for three weeks.