You may want to check with the Tacoma Chapter (
www.tacomanwtf.org). Some of them do bike for birds and even have a little article on their site about it.
I have biked for birds myself, but not for a few years and only for the easterns here on the wetside of the state. Gets a little dicey going in before daylight sometimes ... rocks have a tendency to leap out in front of you at times.

Its mostly uphill going in and can be a real workout that early in the morning.

Then there is always a few that will want to borrow your bike if you don't ride further than they are willing to walk.

Then if you get a flat, broken chain, etc., it can turn into the wrong thing you end up packing out. Have you ever had to ride out in 6 inches of snow ... you get really flying down those hills and just can't see those pesky rocks jumping out in front of you !
Then you finally get way back in by yourself and the birds start coming in ... that's when the kids on the quads and motorbikes come roaring up ... or the Mexican tree planters with keys to the gate driveup ... or the curious hikers that hear the funny turkey sounds come walking thru your setup to find them.
Stop laughing ... it ain't funny ... well, just maybe a bit!
