Are my silkies growing?

[ourrune]

The guy said they were 1 week when we got our silkies. They are 3 weeks now last sat. Hubby pointed out they havent grown much and i stubbornly disagreed but now thinking about it i googled some photos and they do seem smaller. My speckled sussex and salmon faverolle were much bigger at 4 weeks i assumed this was because silkies are bantams but now im concerned. Should i be?
they are on medicated feed because i got concerned they had coccidiosis. I have regular grower/starter feed and ultrakibble i can give them, should i switch?
TIA for any help!

Here is a pic. The bottle is 33.8 oz or 1L for size comparison

 

[silkiechick101]

They are about the size they are supposed to be. They are a small breed so they will look small compared to other breeds.

 

[ourrune]

Yay good! So in about 5 weeks i will know if they are boy or girl correct? By the streamers on the head? Cant wait to know!! Lol

 

[silkiechick101]

In Silkies it is VERY hard to know if they will be a rooster of a hen. There are signs but with mine I had to wait until they were about 2-3 months old. Good luck