: but in open woods including towns and villages and the larger islands. Most easily detected by call in the hour after sunset/before sunrise during courtship/pair formation, Sep-Jan. In our area, females are probably incubating eggs by mid Feb, if not sooner.
Miscellany: Great Horned Owls are legendarily hardy, nesting north to the tree line. Incubating females are said to be able to maintain egg temperatures near 98 degrees F even when the air temperature around them is near - 30 degree F.
Last Updated: March 24th, 2022