All chickens have spur bumps at that age; full grown too. You would only be able to tell by spur bumps when they get about a few months old. And your chick is way to young to give you a for sure answer on gender. As far as the feather sexing, his/her feathers seems to have double rows, so I'm leaning towards pullet. But, this isn't always 100% accurate, and there is always a chance that it could be a roo. Wait till the chick is about 4-6 weeks old then post a pic, and then we should be able to give you the definite answer. Roosters tend to develop pinkish red combs at any earlier age that hens do. They also get red wattles at any earlier age as well. Pullets' combs and wattle grow and color at a much older age than roos.. somewhere at around 6 or 7 weeks is when the girls start to get their pink combs in, and may begin growing wattles. My 6 and half week old girls have very pale, almost a creamy yellowish white comb, and they are barely starting to pink up at all.
My 4 week old rooster has a very pink comb, and already has a tail arch
I hope all of this info helps!!! Best of luck with the new babies!