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Modofied Hoop-Net Techniques for Capturing Birds at Sea And Comparison With Other Capture Methods

Ronconi, R A ; Swaim, Z T ; Lane, HA ; Hunnewell, R W ; Westgate, A J ; Koopman, H N

Marine ornithology, 2010-03, Vol.38 (1), p.23-29 [Periódico revisado por pares]

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  • Título:
    Modofied Hoop-Net Techniques for Capturing Birds at Sea And Comparison With Other Capture Methods
  • Autor: Ronconi, R A ; Swaim, Z T ; Lane, HA ; Hunnewell, R W ; Westgate, A J ; Koopman, H N
  • Assuntos: Aves ; Marine ; Phalaropus lobatus ; Puffinus gravis
  • É parte de: Marine ornithology, 2010-03, Vol.38 (1), p.23-29
  • Notas: ObjectType-Article-1
    SourceType-Scholarly Journals-1
    content type line 23
    ObjectType-Feature-2
  • Descrição: From 2005 to 2008 we developed modified hoop-nets to capture Great and Sooty shearwaters Puffinus gravis and P. griseus, and Red-necked and Red phalaropes Phalaropus lobatus and P. fulicarius in the Bay of Fundy, Canada. Hoop-nets allowed daytime captures of more than 200 Great Shearwaters (average 3.4 birds per trip) but only 6 Sooty Shearwaters (0.1 birds per trip) without chumming. Sooty Shearwaters were captured more effectively at night using spotlights and dip-nets (approximately 1.8 birds per trip). Phalaropes (n = 17) were captured at night using spotlights and a lighter hoop-net. We caught 1.5 phalaropes per trip on average (range 0 to 8 individuals). We discuss the limitations of each technique and review reported methods used to capture other species--floating and submerged mist-nets, net-guns, cast-nets, spotlighting, and other hoop-nets. The main advantage of our technique is the ability to catch shearwaters without chumming. It is the only known method for capturing phalaropes at sea. Techniques described here and other at-sea capture methods allow investigators to address new questions about seabird ecology.
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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