In the frame work of the CANCAP-Project of the Rijksmuseum van Natuurlijke Historie, Leiden, The Netherlands, the Salvage Islands were visited twice: in 1978 (October 21-23) and 1980 (May 26-June 7), respectively. Bird observations were made on both occassions.

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Boletim do Museu Municipal do Funchal
Staff publications

den Hartog, J.C, Norrevang, A, & Zino, P.A. (1984). Bird observations in the Selvagens Islands (21-23 October 1978 and 27 May-7 June 1981) [CANCAP-Project]. Boletim do Museu Municipal do Funchal, 36(160), 111–141.