I have some Isa Browns from Townline Hatchery. I thought they were all pullets and I thought they were sex links in which the females were brown and the males white but now I am having doubts. I have a couple that are feathering in slower and their feathers are a deep red and white. Their combs are slightly bigger also. They are 4 1/2 weeks old. So, are there just this big of differences in color and feathering rates or are there a couple cockerels here? Comments are appreciated.
Chick #1
![](https://www.backyardchickens.com/content/type/61/id/5690171/width/350/height/700)
Chick #1
![](https://www.backyardchickens.com/content/type/61/id/5690167/width/350/height/700)
Chick #2
![](https://www.backyardchickens.com/content/type/61/id/5690178/width/350/height/700)
Chick #2
![](https://www.backyardchickens.com/content/type/61/id/5690179/width/350/height/700)
Chick #3
![](https://www.backyardchickens.com/content/type/61/id/5690180/width/350/height/700)
Chick #3
![](https://www.backyardchickens.com/content/type/61/id/5690181/width/350/height/700)
Chick #4
![](https://www.backyardchickens.com/content/type/61/id/5690182/width/350/height/700)
Chick #4
![](https://www.backyardchickens.com/content/type/61/id/5690183/width/350/height/700)
Side by side comparisons
![](https://www.backyardchickens.com/content/type/61/id/5690198/width/350/height/700)
![](https://www.backyardchickens.com/content/type/61/id/5690199/width/350/height/700)
![](https://www.backyardchickens.com/content/type/61/id/5690200/width/350/height/700)
Chick #1
Chick #1
Chick #2
Chick #2
Chick #3
Chick #3
Chick #4
Chick #4
Side by side comparisons