You can buy anti pigeon/bird spikes. They are plastic spikes that stick
onto all perches and prevent the birds from landing. You will see them all
over buildings with pigeon problems.

Also, fill in all gaps with foam that they will want to nest in.
"ORVAL FAIRAIRN" wrote in message
news
In article .com,
wrote:

So I've got this big new glider hangar with a 60 foot door opening, and
while I like birds (in this case sparrows / fly-catchers), my Yorkie
dog goes nuts when they are in "her hangar". They don't nest but
occasionally poop, being birds after all.

Any suggestions on how to humanely repel / discourage these birds?
Forget guns or poison. Want to keep the dog as well. The big plastic
owls don't seem to work. Banging away on the big old Ludwig drumset in
the back corner seems to help for awhile, along with twanging on my
vintage Rickenbacker guitar - but my chops ain't what they used to be!

Burt
Marfa, west Texas
USA

The method I have heard of is to tie a lot of monofilament fishing line
to the joists and the doorframe, weight each line with a rubber ball, so
they hang down, close together.

The birds apparently can't see the lines and fly into them, but don't
get hurt. They get the message and leave your hangar alone.