Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
Holmes,R
1960
Erolia alpina
9.
10 june Barrow, Alaska
The tail was not spread nor raised +
Seemed to be in normal position. The head
was thrust forward so that it was
Approx. in the same plane as the body.
The aerial thrill was given while The
bird was in the perching (which was
held for about 10 seconds, while the
bird walked behind to & with a
slight sway). The & pair in attention
and continued feed. The other r(c)
turned and walked in the other direction
After the & finished this display. I
had been standing about 10 feet away
the entire time. The second to
third times they encountered each other,
The 2 & recognized each other by
the wing raising, but & was seen
to give only a minor version of the
display. Both times, he lowered
the wing to a horizontal position + gave
part (1th) trials without moving
from his position + then he walked
normally, after the female. It
seemed that A was doing this
courtship behavior for B than
not concerned about c. However,
John C was closely, A was more