Can anyone give me an idea on the age of these 2 Polish? I was told they are a month old in this pic but they are do much smaller and less feathered than my other chicks of different breeds at the same age, even the Silkies. Thanks! For comparison purposes in the last photo, the partridge Silkie is 4 1/2 weeks old, the RIR is 2 weeks old, the white Giant Cochin is 12 days old, Americauna is 4 1/2 weeks old, and Cream Legbar is 2 weeks old. Thanks!