Argentina field notes, v1505
Page 465
Image from the Biodiversity Heritage Library. Contributed by Museum of Vertebrate Zoology, University of California, Berkeley. | www.biodiversitylibrary.org
Transcription
J.P. Myers 1974 Journal (24,16) Estancia Medaland 35 Km S. of Juancho by road, Ptdo de Madariaga, Provincia de Bs. Aires, Argentina 17 September (cont'd) They reached the vicinity of the windmill among the flock were flying low. We found that a large number of golden plovers and geese were roosting in the shallow flooded grass and Solanum swamp beneath the windmill. (0,18) region, Estancia Medaland, 35 km S. of Juancho by road, Ptdo de Madariaga, Provincia de Bs. Aires, Argentina 18 September 0625 reached location where I observed buffle from yesterday, light level upon arrival 38 ftcdl. light a continuous SSE wind was blowing (as it had all night), cloud cover: 100%, temp at 0530: 10°C. Golden were on the field when we arrived. Buffle appeared at 0631, flying across the field + then NE parallel to the road. At this time light intensity = 40 ftcdl. Lois and I remained in the stationary car until 0800, when because Trygite were no longer visible from the car, we left, driving first to the SW corner of the (0,18) field, and then following the fence as far as the farmhouse road bridge. From there we took the Arroyo to (7,12), around the fence at (9,10) and returned to the Arroyo. We had planned to continue up the Arroyo, but at that point I managed to rupture a gas line in the car, so after jury-rigging a temporary tube we returned to the Estancia. shorbird see Trygite 3pp. accent. Today I began a new form of recording sitting of species. Under each exp. that is a subset of species accent is a table containing a column for date, location (co-ord or numbers), light system value on Medaland), activities (flying, foraging, etc.) and accompanying species. (24,16) Estancia Medaland, 35 km S. of Juancho by road Ptdo de Madariaga, Provincia de Bs. Aires, Argentina Late afternoon drove out to the second windmill, as yesterday afternoon. 1710 climbed to same position, 5m above ground. Temp ± 15°C, strong steady SSE wind, clouds increasing from <10% to almost 100% by 1915. The cloud encroachment came in the form of a several km wide line extending SSW-NNE as far as either horizon as we could see. It was composed of a low layer of dark but relatively thin cumulus, with a few enormous cumulus at various points along the length. Until the "line" moved across, light levels were much higher today at equivalent times than they were yesterday. Therefore I was surprised to find that shriekbirds were coming to roost earlier and without the overwhelming unison that has characterized their flight on previous days of observation, particularly yesterday (for timing). At ~1735 I descended