Náttúrufræðingurinn

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Náttúrufræðingurinn - 1976, Side 41

Náttúrufræðingurinn - 1976, Side 41
til Lapplands. Þess má að lokum geta, að allt að 4 hvinandarsteggir sáust á Mývatni sumarið 1976 og auk þess 1 steggur með 2 kvenfuglum 24. apríl á Víkingavatni í Kelduhverfi. Virðist sennilegt að þær hafi flækst með húsöndum norður á svipaðan hátt og hvítendurnar. HEIMILDIR Baucr, K. M. og U. N. Glulz von lilolz- heim. 1969. Handbuch der Vögel Mitteleuropas. Vol. 3. Anseriformes (2. Teil). Frankfurt a. M. Delacour, J. 1954—64. The waterfowl o£ the world. London. Garðarsson, Arnþór. 1967. Hvinendur á íslandi og nokkur orð um ákvörðun hvinandar. Náttúrufr. 37: 76—92. — 1975. íslenskir votlendisfuglar. Vot- lendi. Rit Landverndar 4: 100—134. Reykjavík. Haftorn, Svein. 1971. Norges fugler. Oslo. Johnsgard, P. A. 1965. Ilandbook of waterfowl behavior. Ithaca, N. Y. Witherby, H. F., F. C. R. Jourdain, N. F. Ticehurst og B. W■ Tucker. 1943. The handbook of British birds. Vol. 3. (2. útg.). London. S U M M A R Y The smew (Mergus albellus) recorded in Iceland by Arntlior Gardarsson, Institute of Biology, Universily of Iceland, Reykjavik. A female smew (Mergus albellus) was first observed on Lake Úlfljótsvatn on the river Sog, southwest Iceland on 29 December 1974. The bird was seen again in the same locality in March 1975. The smew was found in mixed flocks of Barrow’s goldeneyes (Buceþhala islandica) and common goldeneyes (Buceþhala clan- gula) of wliich about 90 and 16, respec- tively, were wintering on the Sog. During the period May-August 1975 a female smew, presumably the same individual, was seen on several occasions during waterfowl censuses at Lake Mývatn, north lceland. This bird was mainly found in non-breeding llocks of Barrow’s golden- eyes and was courted by the goldeneye drakes on some occasions (cf. Plate). It was found moulting and flightless on 9 July. On 28 December 1975 a female and a male Mergus albellus were seen on Lake Úlfljótsvatn where they were repeatedly observed singly or together in the com- pany of Barrow’s and common goldeneyes until 9 March 1976. On 30 Marclt the male was found on Lake Laugarvatn, about 20 km NE of Úlfljótsvatn, having presumably arrivecl there that morning with Barrow’s goldeneyes migrating from the Sog. The male was observed on the Laugarvatn until 5 April when it was joined by the female which was present also on 6 April but was not seen after that. The male was last seen on Laugar- vatn on 10 April but was found again 35
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