Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
Holmes,R
1963
Nyctea scandiaca
27 may Barno, Alaska
One adult & seen sitting c. mound
at the sound and /the broodings
near woltsbly Slope. It moved
off to the sound on our approach.
28 may - One seen flying south along Voth Creek (east
of Cale-zebr). - 07
In evening - a bird was seen flying east/ B.R + Ns./
Woltsbly Slope. In flight it was performed with
full stroke to the vertical + the brok at 20-30° kda
the surface. These strokes were performed deliberately
& was obviously a display flight. The wingbeat
Cadence was 2/15sec - each upward stroke
going to within 10° (where the drummers
are evenly just below the horizon). After
about 1/2 min, the bird landed on a 60 x 30' patch
of open tundra & began its "dracula" display with
head stretched forward, wings raised & folded in the manner
of angel's wings. - see 1980 note. The bird was too far for there were too many but it was clear to see if
he was holding a lemming in his beak. No
other bird was seen. After about 3 min, the bird
flew off, giving the display flight - landed across (so.)
Woltsbly Slope + asam chet he dracula
display - This time there was definitely no lemming
in its beak - yet he continued to rotate
on the mound with wings both these forward-
nowhere else - I am diet-national qd. d.sch