Zigzag Heron (Zebrilus undulatus) Science Article 2 abstract Recently we, acquired DNA of two rare species of heron, the Neotropical Zigzag Heron (Zebrilus undulatus) and the African White-crested Bittern (Tigriornis le colophus). To estimate their phylogenetic relationships to other herons, we compared these species with representatives of the major heron clades using DNA-DNA hybridization. Even […]
Category: South America
Notes on Icterus nigrogularis and I. chrysocephalus in Surinam
Yellow-hooded Blackbird (Chrysomus icterocephalus) Science Article 1 abstract In his interesting and important paper,
NESTING BIOLOGY OF BLACK SKIMMERS, LARGE-BILLED TERNS, AND YELLOW-BILLED TERNS IN AMAZONIAN BRAZIL
Yellow-billed Tern (Sterna superciliaris) Science Article 1 abstract Nests of Black Skimmers (Rynchops niger) (n = 37), Large-billed Terns (Phaetusa simplex) (n = 121), and Yellow-billed Terns (Sterna superciliaris) (n = 16) on an exposed sandbar in the Trombetas River, Brazil, were monitored during incubation and hatching in 1982. The species were interspersed throughout the […]
NOTES ON THE LIFE HISTORY OF THE YELLOW-BREASTED FLYCATCHER IN SURINAM
Yellow-breasted Flycatcher (Tolmomyias flaviventris) Science Article 1 abstract In Surinam, the Yellow-breasted Flycatcher inhabits tall mangroves and shade trees in the coffee plantations in the coastal plain. It feeds on small insects plucked in flight from among the foliage. The call is a shrill and high pitched tchee-ee. A display consisting of slow waving movements […]
Notes on Icterus nigrogularis and I. chrysocephalus in Surinam
Yellow Oriole (Icterus nigrogularis) Science Article 1 abstract In his interesting and important paper,
A partly chestnut specimen of Variable Seedeater.
Wing-barred Seedeater (Sporophila americana) Science Article 2 abstract Navy pipeline near Gamboa, Panama Canal Zone, Horace Loftin and I collected an adult male Variable Seedeater (Sporophila aurita) with a considerable amount of chestnut in the plumage. There is a faint chestnut malar stripe and a narrow transverse band of chestnut across the throat. Storrs L. […]
When black plus white equals gray: the nature of variation in the Variable Seedeater complex (Emberizinae: Sporophila)
Wing-barred Seedeater (Sporophila americana) Science Article 1 abstract The degree of relationship between the Variable (Sporophila aurita) and Wing-barred (S. americana) Seedeaters has been debated for over 80 years. The discovery of a zone of hybridization between the former and the Gray Seedeater (S. intermedia), not previously considered to be closely related because of its […]
A flight-song display of White-throated Manakin
White-throated Manakin (Corapipo gutturalis) Science Article 1 abstract White-throated Manakin (Corapipo gutturalis) is known in northeastern South America from the Guianas, Venezuela, and northern Brazil (de Schauensee, The Species of Birds of South America, Livingston, Wynnewood, Pennsylvania, 1966). The species favors hilly forest in Venezuela, between 250 and 1100 m elevation (de Schauensee et al., […]
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 […]