May Nature Happenings - Great Lakes region

  • Hummingbirds and orioles return at the beginning of the month.
  • Warbler migration peaks early in May. Nearly 30 species will migrate through the region.
  • Sub-adult Purple Martins return to establish new colonies early in the month.
  • Yearling Purple Martins (previous year's fledglings) arrive mid- to late-May.
  • Peak of warbler migration early to mid-month.
  • Rose-breasted Grosbeaks, nighthawks, Wood Thrushes, Veerys and Chimney Swifts return.
  • Peak of bird courtship. Listen for the morning chorus.
  • Nesting materials are being collected.
  • Chickadees and titmice become scarce at feeders as they nest and raise their young.
  • Mosquitoes can begin to be a problem late in the month.
  • Eta Aquarids meteor shower is early-May.
  • International Migratory Bird Day is mid-May.