Is my Delaware pullet a cockerel?

Oh my! What big legs HE has!

Well, hard to say. For 5 weeks, seems sort of cockerel-like to me. Here is a Delaware pullet I used to own at 7 weeks for comparison:

Ah, this is chicken math at it's finest.  There is no easy answers.  If one MUST have pullets, sex links gets you that.  With almost everything else, the error rate, purported to be only 10% on hatchery sexed chicks is often more like 15-20% in reality.  In some breeds, sexing is extremely difficult.  Buying straight run chicks almost seems to assure an abundant crop of cockerels.  

coloradocoop,

It is a bit early to tell.  Soon, very soon, the cockerels will show themselves to be who they are.  I agree that the legs are enormous.

Quote:

Originally Posted by coloradocoop 

Good to know! She is by far the sweetest of the flock--she sits in my lap unsolicited and follows my every move. If she is a roo I might have to keep her anyways. I will post more pics in another week or so. Will I know for sure in a couple weeks or months?

Early precocious behavior is often a sign of a cockerel.  

Between 7-12 weeks, a cockerel sports secondary sex characteristics, comb, wattles, and the feathering becomes clearer.  Sickle, saddle and tail feathers are useful in identifying a cockerel.  Finally, there's just that peculiar walk that a budding rooster has. Oh, did I mention the attempts at crowing?  

Delawares, both male and female, are usually extremely friendly chicks. The males usually get lots of "smut" down the back between the shoulder blades, but not always. And some of the pullets have thicker legs than you'd expect, too. I'd say in a week or two, you'll have a better idea.
 

Here was the last Delaware cockerel I hatched at 4 weeks of age-he had less color than I usually get on my Delaware males at this age, but you can see the comb and wattles, both size and color, were unmistakeable: