Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Aegolius is a small genus of owls. Three of the species are restricted to the New World, but Tengmalm's Owl (Boreal Owl) has a circumpolar range through North America, Eurasia, the Alps and the Rockies.The species are:Tengmalm's Owl or Boreal, Northern Saw-whet Owl, Aegolius acadicus,Unspotted Saw-whet Owl, Aegolius ridgwayi,Buff-fronted Owl, Aegolius harrisii.These are essentially nocturnal woodland owls of temperate or colder climates; the two northern species breed in North America's coniferous forests, and the Unspotted Saw-whet Owl and Buff-fronted Owl (Central and South America respectively) are species of mountain cloud or oak forests.

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