Black circled bird is the female. As you can tell from the picture, I'm fairly confident that is most definitely the female with the dead give away of the speckling on her breast as shown in the picture. As well as the small, pointy beak.
Red circled bird is the male. As you can tell by the mostly solid and much darker body along with his beak being much more darker as well. Only reason your having a difficult time fathoming the "red wing" part is simply because EVERY bird is in flight or having their wings positioned to the sky so your not simply able to see the wing coloring.