Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
Catharacta maccormicki
Nov.17 Willett Cove 100 yd off shore from Bonne
Bleuie way
Sam 2 sweeping & diving together,
one made 20-3 passes at the other forth
then landed at adjacent nests, some 20
ft apart in shrubry.
Nov.18 Pt. O&Y. showed interesting reaction to
my presence near nest. It was standing
30 ft W. of nest I was walking past
nest towards it. The bird walked & ran
from me backing & raising
wings, finally flew. This very reminiscent
of Lomarina, what I regard as important
distraction.
Saw 2 birds at a distance in act of
courtship feeding. Was attracted by the call
being given by the begging bird (C & D porcuna)
It was the same begging call given by pom.
chicks when food begging, shrill high pitched
ngi ngi ngi ngi ngi. This actually is
very similar to normal begging call &
latter can be derived from A (vic vena
also) by lowering pitch, adding a "ubeezz"
component & dragging out each syllable
begging & Food beg call so also usually uttered
one syllable at a time & each independent
entity not phrased as the full call is.