How To Make A Sparrow Nest Box, Sparrow Colony Nest Box, How To Make A Sparrow Terrace, Creative Garden Projects

Please see the link below for basic sparrow terrace nesting box plans.
https://images.app.goo.gl/tWu7GLJa8VF...

The link below is for a single nesting box for sparrows. This link from the RSPB does show entrance hole size.
https://www.rspb.org.uk/globalassets/...

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