Der Zug des Kranichs(Grus grus grus)

Libbert, Walter

doi:10.1007/bf01906710

Cited by 9 publications

(2 citation statements)

References 49 publications

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Section: Crih-esmentioning

confidence: 99%

“…The migrations of Grus have been discussed especially by Geyr von Schweppenburg (1934), Libbert (1936, 1948), Schenk (1938) and Hmtling (1939. Libbert (1936) presents a detailed map of the autumn migration, features of which are : Although Libbert has a bibliography of 356 items, it is defective. He gives a misleading impression of the status of the crane in Spain, and fails to notice the mention of the crane as a local migrant (and former breeding species) in all the standard works on the birds of Italy; moreover he omits certain references which to some extent alter the impression conveyed by his map.…”

Section: Crih-esmentioning

confidence: 99%

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Migration in the Mediterranean Area

Moreau¹

1953

Ibis

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SUMMARY. The enormous proportion of migrants that must pass undetected is stressed both on statistical grounds and on certain features of the records. There is no evidence for any important concentration of migrants on the short crossings, by the Straits of Gibraltar, Sicily or the Bosphorus, except for soaring birds at the first and last of these. These birds migrate at the Bosphorus using thermals, but only up to about 14.00 (not, as at Suez, also during the afternoon); while at the Straits of Gibraltar they migrate against winds, often strong. Numerous species cross regularly the widest part of the Mediterranean, between 16′ and 20′ E., over the Ionian Sea, where the north‐south distances are 430–800 miles. There is less evidence for crossing of the other widest stretch, France‐Algeria, 430 miles. The fact that the longest crossings are freely used and that most species do not concentrate on the shortest crossings indicates general broad‐front movement irrespective of obstacles. Occurrences of groups and species are summarized and some comparisons are made. Points of interest include:— Harriers are more often seen at sea than other big raptors. The western cranes appear to concentrate on short crossings much more than the eastern do. The movements of Quail and Turtle Doves are of special interest. More Swallows are seen, both at sea and coasting, than any other birds, and many times more than House‐martins. Common Redstarts and Robins have been recorded at sea surprisingly often, especially by comparison with the Sylviidae. Anatidae and Limicolae are almost unknown at sea. The leading published references to migration in the countries in the Mediterranean area are summarized in an appendix.

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Section: Crih-esmentioning

confidence: 99%

Section: Crih-esmentioning

confidence: 99%