Tag: all of Sporophila

THE BREEDING CYCLE OF THE YELLOW-BELLIED SEEDEATER IN PANAMA

Yellow-bellied Seedeater (Sporophila nigricollis) Science Article 1 abstract This report on the Yellow-bellied Seedeater (Sporophila nigricollis) is part of a fiveyearstudy of the life histories of some common tropical birds of the Panama CanalZone. The species is widely distributed in the tropics and occurs in a variety of habitatsover a great range of altitude. On […]

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 […]

The Slate-colored Seedeater (Sporophila schistacea): a bamboo specialist?

Slate-coloured Seedeater (Sporophila schistacea) Science Article 1 abstract The idea of constant density and stable territoriality found in some tropical birds (Greenberg & Gradwohl1986) does not lend itse1f to species that rely on a short-term, unpredictable resource. One such resource is mast-seeding plants. Mast seeding is the synchronized production of seed at long intervals by […]

Nesting behavior of the Slate-colored Seedeater (Sporophila schistacea) in Panama

Slate-coloured Seedeater (Sporophila schistacea) Science Article 2 abstract The nesting behavior of the Slate-colored Seedeater (Sporophila schistacea) is virtually unknown, and few nests have been described previously (Wetmore et al. 1984, Hilty & Brown 1986). This species is highly nomadic and tends to breed I in areas with large seed crops, particularly bamboo (Willis & […]

Slate-coloured Seedeater (Sporophila schistacea)

[order] PASSERIFORMES | [family] Thraupidae | [latin] Sporophila schistacea | [UK] Slate-coloured Seedeater | [FR] Sporophile ardoise | [DE] Schieferpfaffchen | [ES] Espiguero Apizarrado | [NL] Leigrijs Dikbekje Subspecies Genus Species subspecies Breeding Range Breeding Range 2 Non Breeding Range Physical charateristics The male Slate-coloured Seedeater is grey, with older males significantly darker than young […]

White-collared Seedeater (Sporophila torqueola)

[order] PASSERIFORMES | [family] Thraupidae | [latin] Sporophila torqueola | [UK] White-collared Seedeater | [FR] Sporophile a collier blanc | [DE] Braunburzel-Pfaffchen | [ES] Espiguero de Collar | [NL] Witkraagdikbekje Subspecies Genus Species subspecies Breeding Range Breeding Range 2 Non Breeding Range Sporophila torqueola NA, MA s Texas to Panama Sporophila torqueola morelleti Sporophila torqueola […]

Plumbeous Seedeater (Sporophila plumbea)

[order] Passeriformes | [family] Emberizidae | [latin] Sporophila plumbea | [UK] Plumbeous Seedeater | [FR] Sporophile gris-de-plomb | [DE] Graupfaffchen | [ES] Espiguero Patativa | [IT] Beccasemi plumbeo | [NL] Loodgrijs Dikbekje Subspecies Genus Species subspecies Breeding Range Breeding Range 2 Non Breeding Range Sporophila plumbea SA n, c, sc Sporophila plumbea colombiana Sporophila plumbea […]

Lessons Seedeater (Sporophila bouvronides)

[order] Passeriformes | [family] Emberizidae | [latin] Sporophila bouvronides | [UK] Lessons Seedeater | [FR] Sporophile faux-bouvron | [DE] Diamantpfaffchen | [ES] Espiguero de Lesson | [IT] Beccasemi di Lesson | [NL] Lesson-dikbekje Subspecies Genus Species subspecies Breeding Range Breeding Range 2 Non Breeding Range Sporophila bouvronides SA n, Amazonia Sporophila bouvronides bouvronides Sporophila bouvronides […]