Are Birds Reptiles?

Dinosaurs were reptiles yet they're more related to modern day birds which are warm blooded, todays modern reptiles are cold blooded, birds have feathers, reptiles don't. The only scales birds seem to have are on their feet. This isn't another feathered dinosaur debate I just simply want to know if birds are considered reptiles, I mean, if they're not mammals then what are they? Can someone give me a simple yes and no answer without going into too much detail about it? just wondering.