. The Canadian field-naturalist. Natural history. Seabird Transects between Valleyfield and Funk Island, Newfoundland, Summer, 1969 David N. Nettleship' and C. Eric Tull Department of Zoology, McGill University, Montreal, Quebec. PIROP. Departement de Biologie. Universite de Moncton, Moncton. Abstract. This paper describes the total number of seabirds observed during three continuous watches (17 June, 18 July, 29 August 1969) along the same transect line between Valleyfield and Funk Island, Newfoundland, and sightings made over the coastal zone of the transect (23 April 1969) and off Funk
. The Canadian field-naturalist. Natural history. Seabird Transects between Valleyfield and Funk Island, Newfoundland, Summer, 1969 David N. Nettleship' and C. Eric Tull Department of Zoology, McGill University, Montreal, Quebec. PIROP. Departement de Biologie. Universite de Moncton, Moncton. Abstract. This paper describes the total number of seabirds observed during three continuous watches (17 June, 18 July, 29 August 1969) along the same transect line between Valleyfield and Funk Island, Newfoundland, and sightings made over the coastal zone of the transect (23 April 1969) and off Funk Island (9 May, 18 July 1969). The species composi- tion and the seasonal changes in abundance and dis- tribution have been described. Species recorded were: Piiffiiuis grisens, P. gravis, Fiihnarus glacialis, Ocean- odroma leucorhoa, Oceanites oceaniciis. Moms has- saniis, Stercorarius pomariniis and/or S. parasiticus, Catharacta skua, Larus hyperboreus and/or L. leucopterus, L. marinus, L. argentalus. Pagophila eburnea, Rissa tridactyla, Sterna hirundo, S. para- disaea, A lea tarda, Uria aalge, U. lorn via, Cepphus grylle. and Fratercula arctica. Introduction In connection with studies on the Common Puffin by the senior author, three trips were scheduled from Valleyfield to Funk Island, Newfoundland, during the 1969 summer season. We felt that counts of seabirds sighted along the same transect at different times of the summer (mid-June, mid-July, late August) would permit us to document the changes in species composition, abundance, and distribu- tion. Ideally, observations of seabirds should be analyzed closely with the biotic (food sup- ply) and abiotic (physical and chemical pro- perties) characteristics of the marine environ- ment. However, less comprehensive transects, which relate occurrence and distribution of sea- birds with time of the year are still important contributions to the preliminary understanding of their ecology at sea. It is the purpose of this paper to p
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