Migratory behavior of Northern Flickers is poorly known (Weibe and Moore 2008). This photo is of a flock of 9 of 14 Yellow-shafted Flickers in a neighbor’s tree last Sunday. Flickers migrate in loose flocks, which range from a few birds to over 100. Geographical funnels, like peninsulas or passes, may increase flock size, but that is not the case here. Weather affects migration rates and times, and, in this case, the day was one of south winds, abruptly swinging north in the mid-afternoon.