Читать книгу Report on the Migration of Birds in the Spring and Autumn of 1881. Third Report онлайн

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Notes.—Prevailing winds at the time of the rush of Falconidæ were W., veering from S.W. to N.W. in Aug.; after 23rd E.; on and after Aug. 31st till Sept. 6th N. At XIV., on Aug. 19th, a Sparrowhawk was seen sitting on the ground, and almost daily for some time after. The nearest breeding-place I know of is at Tongue, N. Sutherland; wind at the time was light S., and weather clear. No doubt it is difficult to discriminate often between local and general migrations of Hawks by our data; thus at XIV. also, on Aug. 23rd and 24th, a Sparrowhawk was seen flying south on the former date, and N.E. on the latter; on the former date the wind was light S., on the latter N.E.; this would therefore appear like a local migration.

The only addition to the list of stations is Fair Isle, No. 7 b.

In all spring records the numbers of stations begin at the most southerly, or with the higher numbers. In all autumn records the numbers of stations begin at the most northerly, or with the lower numbers. The maximum station, or station sending most returns of the species, is indicated when thought necessary.