newb questions

[dartfreak75]

Im worried about my young birds iv got 8 hens and a roo thats about 12 weeks old the link said it can retard there growth is that a worst case or is it a guarantee

 

[dartfreak75]

Here are some updated pics these are two different hens

[/IMG] notice the last pic she has a little bump on her waddle too these are the only two in my flock with anything

 

[dartfreak75]