Náttúrufræðingurinn

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Náttúrufræðingurinn - 1987, Side 85

Náttúrufræðingurinn - 1987, Side 85
Zoological Museum in Copenhagen, and “einkasafn” stands for private collection. 1. Laughing Gull (Larus atricilla). Four records. Two from November and December and two from July. 2. Franklin’s Gull (Larus pipixcan). One adult bird in September 1984. 3. Little Gull (Larus minutus). 48 records (16 after 1980), involving at least 51 individuals. Two old pub- lished records of collected birds from Vestmannaeyjar on 28 May 1909 and 10 February 1913 proved to be Rhodostethia rosea. Little Gulls have been seen in nearly all months, but are most frequent in May and June, and in September. Most of the summer records are of young (first-summer) birds, but nearly all winter records (December to April) are of adult birds. 4. Sabine’s Gull (Larus sabini). Ten records (one after 1980), but at least 18 individuals. All the sightings are from July to September, except one in May and one in spring or summer. All aged birds were adults, except a bird collected in 1901. Observations no. 2 and 7 were done from ships at an unknown distance from the coast, and two further records are from ships (no. 4 and 5). Only 6 birds have been observed from land. Record no. 5 includes at least eight birds. 5. Bonaparte’s Gull (Larus phi- ladelphia). Five records (two after 1980). Four of the birds were adults seen in April (one) and June to July (three). One second-winter bird was collected in October. 6. Ring-billed Gull (Larus delawarensis). 19 records (only four before 1981), which include possibly only 11 indi- viduals. Birds of this species have been seen in most years since 1978. First-summer birds (five) have been recorded from March to June, with at least three staying into late autumn, second-summer birds in April (two) and October (one), and adults in April (one) and August-September (two). 7. Ross’s Gull (Rhodostethia rosea). 23 records (two after 1980), but possibly only 14 individuals. An adult bird was seen at the same locality in northern Iceland (at Skipalón) in nearly every summer between 1972 and 1980, and near Akureyri in 1980 and 1981. This may have been the same individual on all occasions, and these records are marked with an asterisk (*) in the list. Records are distributed from Febru- ary to August, with a peak in June. Nine birds were adult but five imma- ture. 8. Ivory Gull (Pagophila eburnea). 76 records (16 after 1980), but number of individuals 87. The records are from October to May, with a peak in early January. One record is from July. About half of the records are of first- winter birds in October to January, but there are very few records of first- winter birds from late winter, prob- ably reflecting difficulties in distin- guishing between the two age groups at that time. Records of adult birds are scattered throughout the winter from October to May. There are also some undated records and comments on birds from the north coast, mainly from the ice edge north of Grimsey. 79 L
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