Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
Maclen
1968
Calorius lapponicus
16 May
these are very abundant in the
uplands areas here. they appear to
be but recently arrived - some ±
settled ♂♂ squabbling over territories and
chasing any ♀ that happens by. Flocks
are still moving through - up to 50 in a
flock - appear to be more ♂ than ♀. Some
song, but no fully developed (i.e.-several
songs in succession in a single flight). Most
of singing is still from the ground.
17 May
In the early morning saw many birds
fluffed up along the road - not too much
activity. Later birds were more active.
Saw flocks of ca. 60 and 120 birds - mostly
♂. Not much interaction among flocking
birds, but settled birds displayed actively
after flock moves through. the flock of
60 spends at least 2 hours on the hillside
WE of camp.