RobertMacy wrote in newsp.xkjbxzns2cx0wh@ajm:

If can't do that, and the birds are on/around your house, THIS
IS ILLEGAL, get a six foot long STRAIGHT piece of metal conduit and smooth
the inside of each end. Take 8 up to 16 penny nails and wrap a paper cone
around the head, tape with scotch tape. then cut the cones to just fit
inside conduit tube. I found it easier to make the cones, then push the
nail into them. Depending on your ability, you'll quickly learn to use the
blow gun. Killing power is awesome. Will penetrate a metal garbage can.

On a related note... the seals inside the wheel cylinders on Chrylser 9" drum brakes are a
perfect fit inside 1" PVC electrical conduit. With a 10d nail pushed through the center of a seal,
even a three-foot length of conduit makes an awesome blow gun -- and you'd be surprised
how quickly you can become quite proficient at hitting a target with it.