Maybe I need to clear the cobwebs from my brain. I have seen Northern Pygmy
Owls use this call during flight on many occasions, and simply forgot, when
asking the question. I guess I was only thinking of larger owls, and Wayne has
answered that question. Thanks to all who replied. I would still be interested
to hear any other reports from people, who have heard other species of owls
calling in flight.
Darrel
From: clearwater@xxxxxxxx
To: "Oregon Birders OnLine" <obol@xxxxxxxxxxxxx>
Cc: "Darrel Faxon" <t4c1x@xxxxxxxx>
Sent: Tuesday, December 24, 2019 6:06:21 PM
Subject: Re: question about owl vocalizations
Darrel & all,
My personal observation is that Northern Pygmy-Owls most often make their
vibrato (screech-owl/boreal-owl-like) vocalizations while flying between
perches.
When I'm calling for pygmy-owls during CBCs in appropriate habitat, I throw in
one of those vibrato calls off and on, in between the more monotonous toots
that NOPOs make while stationary. Not sure I can really get inside an owl's
brain on this, but I think it gives the impression of a NOPO that's moving
between territorial perches.
Yesterday while hiking some upland areas for the Dallas CBC, I was doing this
when a non-vocal NOPO flew in.
Joel
--
Joel Geier
Camp Adair area north of Corvallis
