
doi: 10.2307/3672823
species of falcons taking swifts in flight. Arnold (1942) observed a pair of large falcons thought to be peregrines (Falco peregrinus) working together to capture a white-throated swift. One falcon chased the swift, while the other dove on it from above and made the capture. The second account (Johansson and White, 1995) involved an American kestrel (Falco sparverius) that approached a white-throated swift head-on and slightly below. As the swift climbed, the kestrel flared upward and made the capture.
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