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ANB 07 TW091015 26.jpg
Connecticut River. Goose Island tree swallows swarm.
Connecticut River. Goose Island tree swallows swarm.
  • mass
  • swallows
  • birds
  • flight
  • sky
  • event
  • flock
  • natural
  • feed
  • roost
  • marsh
  • biology
  • social
  • congregate
  • phragmites
  • grass
  • reed
  • perennial
  • wetlands
  • vortex
  • nest
  • evening