I'm going to guess little boy, just because there seem to be a pretty red comb and a bit of wattles there.
(This is just a tentative guess as I'm still pretty new at this. )
It actually DOES have short tail feathers. I bought it from a nice gentleman that bought eggs and hatched them in an incubator. When I went to pick it out, it was two weeks old, and the guy said that usually males get their tail feathers after females. So I picked the smallest one with a tail. Of course, I guess nothing is fool proof. Another bit of info though, I noticed a teeny tiny little bump on the back of each leg. Like the size of the tip of an ink pen, but right where I'm assuming a spur could eventually be. If it does end up being a cockerel, I'm afraid it will have to go. I don't want to risk my neighbors getting ticked and then having to get rid of my hens too!
I am new to this however, I have 3 silver laced wyandottes that I have had since they were three weeks old and none of my girls had any red around their beaks until they were about 2 months old. That is why I would say cockerel.