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No Bats in Your Bat House? Try These Tips

Don't be discouraged if you've put up a bat house and haven't had occupants yet. You may just need to make a few of these changes that bat experts have recently discovered.

  • Paint house black or stain dark
  • Caulk house seams to make it tight to maximize heat and minimize temperature changes
  • Build tall, large house, at least two feet tall, 14 inches wide
  • Provide at least six-inch landing area extended below bottom entrance
  • Make baffles out of rough lumber and separate by 3/4 to 1 inch
  • Mount house at least 12 feet above ground on pole, with no obstructions for at least 20 feet
  • Put two bat houses back-to-back and cover with tin roof
  • Place box in a location that gets at least six hours of sun daily
  • Place box within a quarter mile of at least a three acre body of water

These ideas were from a recent Bat Conservation International (BCI) workshop.

-Crossing Paths Newsletter

Washington Department of Fish and Wildlife