White-lined Tanager (Tachyphonus rufus) Science Article 1 abstract The objective of this study was to investigate feather mites on birds of the Family Emberizidae, tocollect data on the ecological ectoparasite-host relationship and infestation level. A sum of 94 birds of 9 specieswas captured at the Refugio Ecologico Charles Darwin, Igarassu, Pernambuco, Brazil, from August 1996 […]
International Single Species Action Planfor the Conservation of theWhite-headed Duck
White-headed Duck (Oxyura leucocephala) Science Article 2 abstract The White-headed Duck Oxyura leucocephala is listed as Endangered on the IUCN Red List of Threatened Animals.It is also listed on Annex I of the European Union Directive on the Conservation of Wild Birds (79/409/EEC) (BirdsDirective), on Appendix II of the Convention on the Conservation of European […]
Multi-annual spatial and numeric dynamics of the white-headed duck Oxyura leucocephala in southern Europe: seasonality, density dependence and climatic variability
White-headed Duck (Oxyura leucocephala) Science Article 3 abstract A statistical model is developed for the globally threatened white-headed duck during its regional expansion throughout Spain from 1980 to 2000; the model estimates the relative intrinsic, climatic and stochastic effects on population fluctuations and spatial expansion on several time-scales. Facing the current lack of knowledge on […]
Conservation of the globally threatened white-headed duck,Oxyura leucocephala, in the face of hybridization with the NorthAmerican ruddy duck, Oxyura jamaicensis: results of a control trial
White-headed Duck (Oxyura leucocephala) Science Article 1 abstract The North American ruddy duck, introduced into Europe in the 1960s, threatens the globally endangered whiteheadedduck with extinction through hybridization. A regional control trial, conducted in three areas of Britain, killed over 2,600birds and led to a significant regional reduction in ruddy duck numbers. Control using firearms […]
Observations of the White-fronted Manakin (Pipra serena) in Suriname
White-fronted Manakin (Lepidothrix serena) Science Article 1 abstract The White-fronted Manakin (Pipra serena) is found in the highlands of the Guianas, southeastern Venezuela, and adjacent northern Brazil (Haverschmidt 1968,M eyer de Schauensee and Phelps1978). Pipra serena is a small manakin (7-8 g) of the P. coronata species-group (Snow 1979). Males are distinguished by their velvety […]
Observations of the White-fronted Manakin (Pipra serena) in Suriname
White-fronted Manakin (Lepidothrix serena) Science Article 1 abstract The White-fronted Manakin (Pipra serena) is found in the highlands of the Guianas, southeastern Venezuela, and adjacent northern Brazil (Haverschmidt 1968,M eyer de Schauensee and Phelps1978). Pipra serena is a small manakin (7-8 g) of the P. coronata species-group (Snow 1979). Males are distinguished by their velvety […]
SPECIES STATUS OF THE WHITE-FRONTED MANAKIN,LEPIDOTHRIX SERENA (PIPRIDae), WITHCOMMENTS ON CONSERVATION BIOLOGY
White-fronted Manakin (Lepidothrix serena) Science Article 2 abstract The White-fronted Manakin, Lepidothrix serena (formerly in the genus Pipra), is currently recognized as a polytypic species that includes nominate serena, from the eastern Guianan region, and suavissima, from southern and eastern Venezuela and Guyana. Nominate serena and suavissima are significantly different in plumage, syringeal morphology, and […]
First record of the White-flanked Antwren (Myrmotherula axillaris) in Mexico
White-flanked Antwren (Myrmotherula axillaris) Science Article 1 abstract The White:flanked Antwren Myrmotherula axillaris has a wide distribution in the tropical zone, from northeastern Honduras south through Central America to South America, west of the Andes, to northwestern Ecuador and, east of the Andes, to northern Bolivia and southeastern Brazil (A.O.U. 1983). The northernmost record was […]
Olfactory foraging strategies of procellariiform seabirds
White-faced Storm-petrel (Pelagodroma marina) Science Article 1 abstract The study of olfactory foraging ability in procellariiform seabirds is now beginning to explore how species aremorphologically and behaviorally adapted to track odor plumes, and to relate these findings to models of odor transport innatural situations. According to the models, odors in atmospheric flow tend to be […]
Natal and breeding dispersal in the mount White-crowned Sparrow Zonotrichia leucophrys oriantha.
White-crowned Sparrow (Zonotrichia leucophrys) Science Article 1 abstract Dispersal data were collected on Mountain White-crowned Sparrow Zonotrichia leucophrys oriantha, an open-nesting migratory songbird breeding in high elevation meadows of the Sierra Nevada of California. Young birds began to move soon after fledging. Although some remained on their meadow of birth until migration, most moved away. […]