Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
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Transcription
JPMyers
1974
Oreophaslus ruficollis
11 April
(cont'd)
Tower Llanos, Estancia Medeland, 35 km S. of Juancho by road, Pido de Madarina, Picnic Bs Arty Arg.
taking less than 2 seconds. Despite the brevity of the movement it is smooth + un-
hurried. 1845 the flock of Oreophaslus (except one) flew to the S. side of the thistle patch,
calling as it went. A flock of Buffiris joined them in flight. The birds worked back to W
slowly so that by sunset they were by the car. The Oreophaslus continued to forage
until, while distracted by Thinocorus, I lost them in the creek. I did not hear them
fly off, but couldn't find them while walking around the area where I had lost
them. While watching them before they disappeared I saw that, while the tail-cocking occurs during
a stand - it does not appear to occur in any obvious relationship to eating.
15 April
1020 - 2 Oreophaslus only on llanos - at E end of thistle patch.
16 April
0915 - 11 Oreophaslus on llanos
22 April
I am beginning to see Oreophaslus regularly now when I am out either in the Arroyo or on
the llanos. Flying birds are common, as are landed foraging Oreophaslus. There is a flock
of 3 that has been using the gate area by the W gate for several days. They were
there this morning. Another group of 3 are usually by the SE tip of the thistle patch.
I count a minimum of 35 over tower Llanos now.
Farmhouse Rd (by Tkt 12, Estancia Medeland, Pido de Madarina, Picnic Bs Arty Arg.
found a flock of Oreophaslus by the gate leading off of the Estancia this afternoon (1805).
~ 10 birds there, foraging w/ Zonibyx. This bird is a lot scrubbier - heavier
Hustle than Tower Llanos 1930 - they were still there when we returned to the
Estancia this afternoon.
26 April
see journal. 1400 watching Oreophaslus on llanos by gate - a flock of 9, plus other shrewbird.
Oreophaslus eyebrow stand out: viewed from directly in front (bill forward) or from the
rear, the eyebrows look like Zonibyx's eyebrows:
[illegible]
but unlike Zonibyx
the Oreophaslus has a much more scolopacid-like
smoothness to it (i.e. it lacks
the 'squares' of a charadriid). Watching Oreophaslus forage adjacent to Zonibyx one
consistent difference between the foraging behaviours is the following: Oreophaslus takes several
steps after it has stopped to peer + stretch its neck before stalking picking at the ground.