"The flies also play an important ecological role, feeding on (and being fed on) by many other marsh residents. The insects provide a food source for seabirds like sandpipers and willets." From Molly Rains
Marsh flies swarm your beach day? File a greenhead report. • New Hampshire BulletinNew England beachgoers know them well: With bulging, Kelly green eyes, and mouthparts that slice into their targets' skin like scissors, greenhead horseflies can't be ignored.newhampshirebulletin.com