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Swoop. No preparatory getting into position. The regular 
Long Call, of the aggressor, "becomes higher, louder, and harder. 
During the Swoop this chahges into the "attack" call. The Swoops 
themselves seem similar to those seen last year. Vary greatly in 
intensity. (Notice . During the "hanging" part of the Swoop 
the wings are often not as V-shaped as I drew them, and the hand 
is usually more "bent). Neck usually down. Breast looks puffed 
out. Have seen gulls Swoop at pigeons - 9 at crows, and at nothing 
at all. The Swoop is sometimes mutual. Sometimes practically 
simultaneous. Sometimes an interval supervenes "before the original 
Swooper is Swooped at. 
Is ther a particular aggressive flight? A "Goose Flight"? 
Neck stretched out. Long Call uttered. Breast prominent. 
