Náttúrufræðingurinn - 1978, Side 26

ber—desember), m. a. þessar tvær frá
Grænlandi. Þó að 5 endurheimtur
veiti ntjög takmarkaðar upplýsingar
um flakk íslenskra teista utan varp-
tíma, gefa þær ef til vill til kynna, að
verulegur hluti íslenska teistustofns-
ins hverfi frá landinu og leiti út fyrir
íslandsála yfir vetrartímann, a. m. k.
á vissu aldursskeiði. Varast ber þó að
draga fastmótaðar ályktanir í þessurn
efnum, fyrr en allmiklu fleiri endur-
heimtur Hggja fyrir.
Að lokum vil ég þakka Finni Guð-
mundssyni aðgang að hamasafni Nátt-
úrufræðistofnunar, og Erling Ólafs-
syni yfirlestur þessa greinarkorns og
fyrir að taka ljósmyndina.
HEIMILDIR
Bannermann, D. A1963: The Birds of
tbe British Isles. Vol. 12. xiii-f-443
Irls. Oliver & Boyd, Edinburgh.
GuiSmundsson, Finnur, 1953: íslenzkir
fuglar VI. Teista (Cepphus grylle
(L.)) Náttúrufræðingurinn 23 (3):
129-132.
Hörring, R., 1937: Birds collected on the
Fifth Thule Expedition. Report of
the Fifth Thule Expedition 1921 —
1924, Vol. Tf, Nr. 6.
Ingólfsion, Agnar, 1961: The Taxonomy
of Black Guillcmots (Cepplms grylle
(L.)) from Iceland and the Faeroes.
B.Sc. ritgerð, Aberdeen University,
Scotland. 28 bls.
Salomonsen, F., 1944: The Atlantic Alci-
dae. (The seasonal and geographical
variation of the auks inhabiting the
Atlantic Ocean and the adjacent
waters). Medd. Göteborgs Mus. Zool.
Avdeln. 108. 138 bls.
— 1967: Fuglene pá Grönland. 341 bls.
Rhodos, Köbenhavn.
Slorer, R. W., 1952: A Comparison of
Variation, Behavior and Evohidon
in the Sea Bird Genera Uria and
Cepphus. University of California
Publ. in Zoology. Vol. 52 (2): 121 —
222.
'Timmermann, G., 1949: Die Vögel Is-
lands. Vísindafélag íslendinga
XXVIII. Erster Teil, 2. Hiilfte (Folge
2) Sc zweiter Teil: 241—524.
S U M M A R Y
Icelandic Black Guillemots
(Cepplius grylle islandicus)
recovered in Greenland
and Mandt’s Guillemot (C. g.
mandlii) recorded in Iceland
by Ævar Petersen,
F.diuard Grey Institute of Field Ornitho-
logy, Dept. of Zoology, Univ. of Oxford,
South Parhs Rd., Oxford, England.
The present knowledge of the origin
of Black Guillemots found in Icelandic
waters in winter, is reviewed. Only one
Black Guillemot of foreign origin has ever
been recorded in Iceland with certainty.
This was a Cepphus grylle mandtii,
Mandt’s Guillemot, a subspecies which has
a more northerly distribution than island-
icus. This specimen is now in the collec-
lion of the Museum of Natural History,
Reykjavik (see Fig. 1). This specimen, a
Isl winter male, was shot at sea at Nord-
fjordur, S.-Múlasýsla (E.-Iceland), end of
October 1961.
Very scanty material exists on the
movements of Icelandic Black Guillemots
outside the breeding season. Only rela-
tively few birds of this species liad been
ringed prior to 1973. Since then, 1696
Black Guillemots have been ringed at or
arottnd Flatey in Breidifjördur (NW.-Ice-
land), 1444 as clricks and 252 as breeding
adults, especially since 1975 wlien a study
was initiated on the ecology of this spe-
cies. So far (up to beginning of Septem-
ber 1977) 2 birds, ringed in the Elatey
area, have been reportcd from outside
152