Savannah Sparrow (Passerculus sandwichensis) Science Article 6 abstract Evidence of intraspecific nest parasitism in passetines is rare although some well documented cases do exist (Yom-Tov et al. 1974, Ibis 116: 87-90). This note describes an incident whose circumstances suggest that two complete clutches were laid simultaneously in the same nest by two female Savannah Sparrows […]
Category: Passeriformes
THE FLEXIBLE MIGRATORY ORIENTATION SYSTEM OF THE SAVANNAH SPARROW (PASSERCULUS SANDWICHENSIS)
Savannah Sparrow (Passerculus sandwichensis) Science Article 1 abstract The orientation system of the Savannah sparrow (Passerculus sandwichensis) is typical of nocturnal migrant passerine birds. It is based on a system of interacting compass senses: magnetic, star, polarized light and, perhaps, sun compasses. The magnetic compass capability develops in birds that have never seen the sky, […]
SUBSPECIFIC VARIATION IN WINTER POPULATIONS OF SPARROWS: A STUDY IN FIELD TAXONOMY
Savannah Sparrow (Passerculus sandwichensis) Science Article 9 abstract In 1951 an extensive area in Aiken and Barnwell counties, South Carolina, was selected as the site for the Savannah River Plant, whose genesis and general management fall within the province of the United States Atomic Energy Commission and whose construction, maintenance, and operation are due, in […]
Seasonal and diel budgets of song: a study of Savi’s warbler( Locustella luscinioides)
Savis Warbler (Locustella luscinioides) Science Article 1 abstract Seasonal and diel patterns of singing activity of Savi’s warblers (Locustella luscinioides) were studied in two areas of Central Europe 300 km apart, over a period of 18 years. We assessed about 4,600 records of individuals singing. Males were found to exhibit similar singing activity in both […]
THE BEHAVIOR OF SCALE-BACKED ANTBIRDS
Scale-backed Antbird (Hylophylax poecilinotus) Science Article 2 abstract Among birds that regularly capture arthropods flushed by swarms of army ants in South American forests (Willis and Oniki 1978), one of the species lowest in peck orders is the Scale-backed Antbird (Hylophylux poecilinota). Here I report on the specialized behavior patterns that allow it to become […]
NESTING RECORDS OF FIVE ANTBIRD SPECIES FROM THECOLOMBIAN AMAZON
Scale-backed Antbird (Hylophylax poecilinotus) Science Article 1 abstract Few nests of Amazonian antbirds (Thamnophilidae and Formicariidae) have been described.Here we present nesting records for five species of antbirds found in Tinigua National Park, Colombia. A pouchshapedpensile nest of the Warbling Antbird (Hypocnemis cantator) in a treefall gap within seasonally floodedforest contained two eggs colored like […]
GEOGRAPHIC VARIATION IN EASTERN NORTH AMERICAN SAVANNAH SPARROWS
Savannah Sparrow (Passerculus sandwichensis) Science Article 4 abstract In attempting to identify Ohio specimens of the Savannah sparrow, the writer was confronted with the usual difficult problem familiar to investigators in this confusing group of birds. He was not long in discovering what had already been suspected, that more than one geographic race is represented […]
Home range and territory of the SardinianWarbler Sylvia melanocephala in Mediterraneanshrubland
Sardinian Warbler (Sylvia melanocephala) Science Article 1 abstract Sardinian Warbler Sylvia melanocephala is the commonest Sylvia warbler in shrubland with a Mediterranean climate with mild winters (Shirihai et al. 2001). It uses a wide range of habitats, such as scrublands and maquis, open forests containing bushy undergrowth, as well as agricultural areas and urban gardens. […]
Ecology and taxonomy of Savannah Sparrow Passerculus sandwichensis in Nuevo Leon, Mexico
Savannah Sparrow (Passerculus sandwichensis) Science Article 5 abstract no abstract Robert A. Behrstock and Ted L. Eubanks, Cotinga 7 (1997): 31-34 Download article download full text (pdf)
Nesting of the Mangrove Swallow (Tachycineta albilinea) in nests of the Rusty-margined (Myozetetes cayanensis) and Social (M. similis) Flycatchers
Rusty-margined Flycatcher (Myiozetetes cayanensis) Science Article 1 abstract In March-May 1999, I conducted observations on breeding ecology of Rusty-margined (Myozetetes cayanensis) and Social (M. similis) flycatchers along the coast of the Barro Colorado Island located on an artificial lake Gatun. The lake was created during the building of the Panama Canal. The island, a naturereserve, […]