Argentina species accounts, v1504
Page 521
Image from the Biodiversity Heritage Library. Contributed by Museum of Vertebrate Zoology, University of California, Berkeley. | www.biodiversitylibrary.org
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.