On 28 Feb 00, at 19:35, Wallis Bolz wrote:


>
> If I were to narrow the entrance hole, what size would deter a house sparrow but
> still welcome the chickadee?
I have put "collars" or blocks of wood with the smallest possible holes over
the entrance to commercail nestboxes to keep out the house sparrows and
they are 7/8 inch in diameter. Anything bigger and the sparrows will get in.
We have raised chicadees in these boxes and they can get in and out just
fine We also put metal guards in the roof to keep the sparrows from
perching there and hassling the chickadees trying to get in.
>


Clarice Clark
Puyallup, WA. 98371
mailto:jbroadus at seanet.com