Barred owl nestlings in a box of the author s design.
Barred owl box dimensions.
Box height entrance above floor entrance hole height above ground robin phoebe barn swallow 7 x 8 8 6 10 barn owl 11 1 4 x 36 15 3 4 4 6 20 25 barred owl 13 x 11 1 2 23 12 7 x 7 with top rounded 20 30 within 200 of water bluebird great crested flycatcher.
Building a barred owl nest box 1 2 sheet 4 x 4 3 4 plywood pressure treated if desired exterior wood glue 1 5 8 ths exterior wood screws 2 4 inch by 1 4 inch all thread bolts to connect perch to nest box several 1 4 inch nuts washers and lock washers 2 6 inch long by 1 1 2 or 2 inch wide.
Photograph by the author.
Other designs using wide pine boards were similarly heavy as well as prone to rapid decay.
Features of a good nest box.
Barred owl nest box plan and information.
A typical barn owl nest box has a six inch entrance hole that is suitable for a barn owl but too small for a great horned owl and the hole should be approximately four inches above the floor of the box.
The barn owl trust a leading authority on barn owls recommends increasing their nest box dimensions by 50 for the american barn owl equating to a floor dimension of 30 x 24 5 ft2 and a minimum of 10 ft3 for a box that is 24 deep.
Place 3 4 of wood chips in bottom of box.
Results from research conducted on owl nest boxes of various sizes indicate smaller boxes.
3 2010 boxes in a tree made it clear to me that there had to be a better way.
Have someone help you push the sides together so.
Turn the box 180 degrees and attach the back side the same way you attached the front side.
Clutch size phenology for common species.
Learn what features are best for birds and their safety.
Violet green and tree swallows 4 x 5 1 2 9 6 1 3 8 w x.
No perch is necessary and adding one will only give footing to predators.
If it is not right pull the sides apart and redo the step.
Otherwise you will have problems later.