Alaska species accounts, part 3, v4222
Page 195
Image from the Biodiversity Heritage Library. Contributed by Museum of Vertebrate Zoology, University of California, Berkeley. | www.biodiversitylibrary.org
Transcription
Holmes,R 1962 Erulia alpina 4 June Barrow, Alaska usually is monol polytris (a slight raised in courtship?). Also many aggressive or structural displays. The & may follow the D (D display) to be done The introducing individual - pair > the from Drama. The & can also give the aerial trials but this has only been seen from India. A frequent & a 4 down an actual aerial display has not been recorded. 5 June - Several displaying birds seen along The 5th Road - as well as 2 flocks (8 + 13) - one near Uphill Area - one on the high ground S.W. of Br. Hm's Area. No aggressiveness or displaying was seen among members of the flock - all fed together - flushed at the same time - only The cawl note was given. A male displaying bird flew in & landed among the group - flapped his wings - giving a loud trill. It then landed - both wings were held up for about 6 sec. - The lowered tail normal position - but head was held high. The one wing was raised along the shell was given when the wing was vertical - this was directed toward one member of the flock (both 837); another bird flapped off a few feet thereafter