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Bird Notes

Nature volume 81, pages 8788 (15 July 1909) | Download Citation



TO the May number of Naturen Mr. O. J. Lie-Pettersen contributes an account of the life-history of the icterine tree-warbler (Hypolais icterina or H. hypolais) in Norway, where it is known as the “bastard nattergale.” The dates of arrival in the neighbourhood of Bergen during a period of eleven years range from May 16–20 inclusive; birds of the year take their departure about the middle of July, and old birds some weeks later. By the middle of August nearly all have vanished, although an occasional straggler may tie seen up to the end of that month, and one specimen was so late as September. Among the trees haunted by this species the hazel is the favourite; nesting takes place at the end of May or early part of June, and the period of incubation is thirteen days.

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