Architectural Designs

tree swallow bird house plans jpg

Summary: species specific and for good reason For example cavity nesters require different entry hole diameters A hole size for bluebirds will be different than one for ducks of course Also the appropriate size hole will exclude certain undesirable species For example a hole size 1 1 8 inch in diameter will exclude starlings and house sparrows which often monopolize

Image Dimensions: 250 x 188