ML638050160

观察细节

Observed one individual (large, brown body; long, lanky wings, with exaggerated "wrist"; brown mask on otherwise white face) making almost whistle-like, gull-like calls while flying northbound over area a little ways west of central prairie area, as I started walking northbound along east edge of levy and west edge of prairie area, at fairly close range, (seen moments after the Peregrine Falcon had flown just out of view, farther to the north). ... (Posted a cropped image from a digiscoped photo of the individual in flight, calling, with its back to me.)