White-winged Becard (Pachyramphus polychopterus) Science Article 1 abstract Bill deformities have been recorded for several bird species around the world. Craves (1994) presented a revision on bill deformities in passerines (Aves: Passeres), which was updated by the Rouge River Bird Observatory (University of Michigan-Dearborn 2004). Bill abnormalities are known to occur in low frequency in […]
Category: Passeriformes
Tanagra minuta, an addition to the Mexican list
White-winged Becard (Pachyramphus polychopterus) Science Article 2 abstract While examining bird skins in the collection of the Moore Laboratory of Zoology, Phillips found in a series of T.affinis a previously undetected specimen of the White-vented Euphonia T. minuta Cabanis. The specimen, apparently an adult male: is labeled Palenque, Chiapas, altitude 210 m, 9 May 1946, […]
A Nest of the White-plumed Antbird (Pithys albifrons) in Surinam
White-plumed Antbird (Pithys albifrons) Science Article 1 abstract The White-plumed Antbird (Pithys albifrons) is one of the birds that follows army ants in the undergrowth of northern South American forests. In Surinam, breeding records involve only collected specimens of young birds (Hayerschmidt 1968, Birds of Surinam, edinburgh-London, England, Oliver and Boyd, p. 267). Nest and […]
RAPTORS AND ‘CAMPO-CERRADO’ BIRD MIXED FLOCKLED BY Cypsnagra hirundinacea (Emberizidae:Thraupinae).
White-rumped Tanager (Cypsnagra hirundinacea) Science Article 1 abstract Bird mixed flocks including Cypsnagra hirundinacea and Neothraupis fasciata as species with sentinelswere studied in ‘campo-cerrado’ in order to investigate the possible relationship between alertnessand the mixed flock leadership. This study was conducted from March to September 1996 and mixedflocks were observed on average for 2:30h. The […]
Do Common Whitethroats (Sylvia communis) discriminateagainst alien eggs?
Whitethroat (Sylvia communis) Science Article 2 abstract In a coevolutionary arms race between a brood parasite and its host, both species are expected to evolve adaptations and counteradaptations, such as egg mimicry and egg discrimination. The Common Whitethroat (Syh, ia communis) is a regular Common Cuckoo (Cuculus canorus) host in some parts of its breeding […]
Male whitethroats, Sylvia communis, advertisetheir future contribution to parental care
Whitethroat (Sylvia communis) Science Article 1 abstract In altricial species participation of males in parental care enhances reproductive success offemales. How does a female select amate who will allocate time and energy to parental effort?In the whitethroat Sylvia communis, a socially monogamous bird, parental performance ofmales might be predicted on the basis of elaborated song […]
ENERGY EXPENDITURE BY FREE-LIVING DIPPERS (CINCLUS CINCLUS) IN WINTER
White-throated Dipper (Cinclus cinclus) Science Article 3 abstract We measured daily energy expenditure (DEE) of free-living Dippers (Cinclus cinclus) during winter, using the doubly-labelled water (DLW) technique. DEE was estimated as 206 kJd-1 by this method, compared to 194 kJd-l using time-activity budgets combined with laboratory estimates of metabolic costs D. M. BRYANT et al, […]
Ecological relationships between feather mites (Acari) and wild birds ofEmberizidae (Aves) in a fragment of Atlantic Forest in northeastern Brazil
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 […]
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 […]
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 […]