Purchased a Delaware hen think it might be a rooster!

[BantamLover21]

Tail photos would help a lot.

 

[WalkingOnSunshine]

That's a cockerel.

Not fighting is no reason to think that he's not a rooster. As long as you have enough hens, more than one rooster will coexist quite well in a flock.

 

[Snookslayer]

Thanks for all the replies. Here is a better side picture.

 

[cluckcluckluke]

Rooster !!!

Hope you can keep him!