1.   Sometimes the blood oozed into great black puddles over which huge swarms of flies hovered.

2.   A frenetic swarm hovers above a tall maple tree near Jamaica Pond in Boston.

3.   Everywhere swarms of flies hovered over the men, crawling and buzzing in their faces, everywhere was blood, dirty men.

4.   Last year, I watched a swarm of Hexagenias hover over a stream at dusk trying their best to look like a kettle of broad-winged hawks.

5.   Swarms of flies hovered over his several dozen tomatoes rotting in the hot sun.