swoop down on

swoop down (up)on someone or something

 
1. Lit. to dive or plunge downward on someone or something. The eagle swooped down upon the lamb.
2. Fig. [for someone] to pounce on and consume something. The children swooped down on the ice cream and cake.
See also: down, on, swoop
References in classic literature ?
In the winter of '46-7 there came a hundred men of Hyperborean extraction swoop down on to our pond one morning, with many carloads of ungainly-looking farming tools -- sleds, plows, drill-barrows, turf-knives, spades, saws, rakes, and each man was armed with a double-pointed pike-staff, such as is not described in the New-England Farmer or the Cultivator.
However, the Royal Society for the Protection of Birds said that although the gulls had been known to swoop down on people during nesting time, they were not dangerous and would not actually make contact.