Jackdaws!

[jdc]

Two days running now I have watched a Jackdaw land on the anemometer arm and then get it's head scratched by the rotating cups. It was obviously loving it, as it almost fell off the arm whilst squirming around to get the best position, but it knew not to apply too much pressure as that would stop the rotor.

Is there a 'bird' calibration I can use?

[Tau Bootis]

Is there a 'bird' calibration I can use?

Yes its .22 caliber