Keywords
Haematopus ater
Chubut
Biología reproductiva
Bahía Bustamante
How to Cite
Abstract
In our study about the breeding biology of the Blackish Oystercatcher Haematopus ater, conducted during 1991/92 breeding season, the laying period started at the end of the second week of October and finished at the end of November. Mean clutch size was 1.8 (sd= 0.4, n= 26, modal clutch size= 2), while the mean laying interval between the first and second eggs laid in the same clutch was 2.8 days (s.d.= 1.4, n= 16). The laying-hatching intervals averaged : R days (s.d.= 2.5, n= 11). Hatchings occurred between the second week of November and the first week of December and mean hatching interval was 1.8 days (s.d.= 0.5, n= 5).
References
Araya,B&GMillie.1986.GuíadecampodelasavesdeChile.EditorialUniversitaria.Santiago.
Clark,R.1986.AvesdeTierradelFuegoy CabodeHornos.L.O-LA.,BuenosAires.
Daciuk,J.1977.Notasfaunísticasy bioecológicasdepenínsulaValdésy Patagonia.VI.Observacionessobreáreasdenidi-ficacióndela avifaunadellitoralmarítimopatagónico.Hor-nero11:361-376.
Hayman,P.,J.Marchant&T.Prater.1986.Shorebirds.Anidentifica-tionguidetothewadersoftheworld.ChristopherHelm(Pu-blishers)Ltd.London.Hqlpleston,P.B.1m.Theoom¡malheecologyoffoystercat.clx:rs(Haemato-pusoSlra1egus)ininlandandClXIStalhabitals.1.Anim.EcoI.41:23-51.
Hoyt,D.E1979.Practicalmethodsofestimatingvolumeandfreshweightofbirdseggs.Auk96:73-77.
Humphrey,P.D.,D.Bridge,P,w.Reynolds&R.T.Peterson.1970.BirdsofIslaGrande(TierradelFuego).SmithsonianInstitu-tion.Washington,D.e
Johnson,A.W.1965.ThebirdsofChileandadjacentregionsofAr-gentina,BoliviaandPerú.Vol.1. PlattEstablecimientosGrá-ficos.BuenosAires.
Legg,K.1954.NestingandfeedingoftheBlackOyster-CatchernearMonterey,California.Condor56:359-360.
Murphy,R.C.1936.OceanicbirdsofSouthAmerica.Amer.Mus.Nal.Hisl.201NewYork.
Narosky,T.&D.Yzurieta.1987.Guíaparala identificacióndelasavesdeArgentinay Uruguay.Asoc.Ornil.delPlata.BuenosAires.
Nol,E.1989.FoodsupplyandreproductiveperformanceofftheAmericanOystercatcherinVirginia.Condor91:429-435.
Olrog,C.C.1948.ObservacionessobrelaavifaunadeTierradelFuegoy Chile.ActaZool.Lilloana.TomoV:437-531.
Pagnoni,G.,D.Perez&M.Bertellotti.1993.Distribución,abun-danciay densidaddenidosdeavesenlaIsladelosPájaros,Chubut,Argentina.Actasdela~Jorn.Nac.deCienciasdelMar'91:134-141.
Reynolds,P,w.1935.NotesonthebirdsofCapeHorn.lbis5:65-101
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.