Northern Flickers are common and we get up to 7 at once in the backyard, they all don't get along though.
Northern Flickers can be very shy so I use a blind to get closer.
Northern Flicker Red Shafted, I don't think these are intergrades even though there is a red vee on the back of the neck, almost all of the red shafted flickers have that marking here, we do get a true intergrade every fall and it has the face markings of a red shafted and yellow shafting.