Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
Homes, R.
1960
23.
Erolia calpina
9 July Kersault, Alaska
hard to find, even though the diameter
was only about 3 feet. Their coloration
blended in extremely well. The adults
gave warning to the young, who immediately
froze + didn't move. This also occurs
in the brood seen last night. Seven
displaying birds seen heard today.
10 July - The broods and adults near the
wanigan were not seen today. Yesterday
evening, they seemed to be moving
west after 7 am & the ridge. A
common call note when two
siren are. The birds have overcame
their surprise at being individual
with a rhaaa, rhaaa, rhaaa....
This has a trill like quality, and
is given when the bird is alert to
aware of an intruder's presence. It
was also noted yesterday, morning
that 8 hours after the lost
chick latched, there were no
signs. The broken shells within
the 3' diameter of the pen. Several
birds heard displaying today,
but these displays are
getting weaker & weaker and are
not given as frequently.
egg Shells gone