Birdhouses
by The "Gourdfather™"

The following chart shows the minimum size gourd and the diameter of the entrance hole for each bird:
Name of Bird Minimum Size Gourd Diameter of
Entrance Hole
House or Bewick Wren 4" 1"
Caroline Wren 5" 1-1/8"
Chickadee 4-6" 1-1/8"
Tufted Titmouse 5" 1-1/2"
Downy Woodpecker 5" 1-1/4"
White-Breasted Nuthatch 5" 1-1/4"
Small Owl 5-6" 1-1/2"
Bluebird 6-8" 1-1/4"
Owl Very Large!!! 5-6"
Crested Flycatcher 6" 2"
Purple Martin 6" 2-1/2"
Flicker 7" 2-1/2"