Collected reprints: Abstract 3450

Collected reprints


Joiris, C. (1972). Observations ornithologiques réalisées dans le sud-est de la Mer du Nord, entre juin 1971 et janvier 1972 : 2. Espèces non-marines. [Ornithological observations in the southeastern North Sea between June 1971 and January 1972 : 2. Non-marine species.]. Bulletin AVES 10: 19-25

During three pelagic cruises in the South-eastern part of tIle North Sea, the author spent a total of 82 hours (in 41 days) watching birds (Joiris, 1972). Sea bird watching involves only few birds, belonging to non-marine species. Nevertheless, it is a method which enables to point out periods of movement for given populations.

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