Tuesday, October 28, 2008

A surprise visitor!

On 13 October 2008, Kristen and I were very surprised to find the bird below in our nets... a Boreal Owl!! This owl is normally found much further north in the boreal forest and we never imagined we would catch one of these at Edenwold! We were very excited.
Boreal owls are slightly larger than Northern Saw-whet Owls, as you can see by the photo, but interestingly this bird weighed less than a few of the larger saw-whets we have caught this year! Boreal owls mass can range from 90-200 g (this one was 109g) while saw-whets range between 75 to 120 g (that I have caught).
Based on measurement and the lack of a moult limit we think this was a young male. We are not sure why he was down near Edenwold at this time of year but were very pleased we were able to see this guy. This was the first Boreal Owl I had ever seen!

1 comment:

Kim said...

Very cool stuff Jared! They look so much larger when you see them hanging out on the tree tops up north.