Hello tweets;
1.25 is the recommended diameter by the nesting box handout from the
backyard wildlife habitat program of Washington. 1.5 does exclude
starlings, but unfortunately, house sparrows can still get in. For
swallows, it is recommended to use the elongated slit opening that lets
swallows squeeze in laterally, but generally excludes house sparrows.
Janet Partlow
partlowj at elwha.evergreen.edu

On Wed, 16 Apr 1997, Mike Patterson wrote:

>
>
> 1.5 inches is the diameter I use on all my nest boxes. It excluded Starlings
> while letting Swallows, chickadees and wrens in.
>
>
> >
> >
> >Greetings,
> >
> >I've got some starlings moving in to a tree right outside my window, and
> >while guano is good for plants, I'd rather not have to look at it all the
> >time.
> >
> >Do any of you know a good diameter that I could use to block out the
> >beasts, but let in the meek?
> >
> >Thanks,
> >Nick
> >
> >
> >
> >
> >
> >
>
> --
> *********************************** I got the blues so bad one time
> * Mike Patterson, Astoria, OR * it put my face in a permanent frown
> * mpatters at orednet.org * but I am feelin' so much better
> *http://www.pacifier.com/~mpatters* I could cake-walk into town
>