Show me the birdlist of an area, but keep the location a secret and I can come fairly close to guessing it, at least as far as the state or even the part of the state, no
binocular or
spotting scope needed. This comes from moving around a lot and
birding wherever the winds carry me. Guessing east to west part of the location will probably be a bit easier, since I have tended to
wander along this axis more, but staying to the north for the most part. Haven't wandered and birded enough south, but then who knows where the wind will carry me, next?