Collared dove-on-window collision

So printed off a couple of this silhouette. Isaac Meyer Marks, Fears, phobias, and rituals: “Wild turkeys of any age try to escape from anything appearing above them in dark silhouette against a lighter background and moving with a certain angular speed relative to the size of the object. Similar escape reactions occur from a fly creeping along the white ceiling of the laboratory, a balloon floating across the sky, a helicopter, or a hawk…”

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