[Tweeters] bird house hole sizes and entry shapes

Steve Hampton via Tweeters tweeters at u.washington.edu
Thu Oct 10 09:19:54 PDT 2024


Earlier this year, there was a productive discussion on Tweeters about bird
nest boxes and hole sizes, and how to exclude House Sparrows.

I've since had some great discussions with local legends Ron Sikes and Ken
Wiersema, who have used a WDFW diamond-hole design, modified it into a long
oval, and had great success. The key is the height of the oval should be
7/8" tall, but can be 2" wide. This will be suitable for chickadees, wrens,
nuthatches, and swallows, but will exclude House Sparrows.

I've posted some pics and diagrams here (as well as some other tips on
backyard bird habitat and feeding).

*What you can do for birds in your yard
<https://thecottonwoodpost.net/2024/10/09/what-you-can-do-for-birds-in-your-yard/>*

good birding,


--
Steve Hampton
Port Townsend, WA (qatáy)
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