Carrion Crow (Corvus corone corone) Science Article 2 abstract The Carrion Crow (Corvus corone corone) and the Hooded Crow (C. corone cornix) have parapatric ranges in Europe with narrow areas of hybridization. Reproductive biology of populations of Carrion and Hooded crows and hybrids is described for four areas in northern Italy. Nonrandom mating was observed […]
Category: Passeriformes
Reproductive success increases with group size in cooperativecarrion crows, Corvus corone corone
Carrion Crow (Corvus corone corone) Science Article 5 abstract The effect of group size and the number of helpers on reproductive success is crucial to understand theevolution and maintenance of cooperative breeding. In northern Spain, carrion crows form kin-groups(three to nine individuals) where up to five individuals contribute to rearing the young DANIELA CANESTRARI et […]
Kleptoparasitism by Peregrine Falcons on Carrion Crows
Carrion Crow (Corvus corone corone) Science Article 1 abstract […]. The study area was Bizkaia, a small province of 2300 km2 located in the north of Spain. In this area we have monitored about 35-38 Peregrine territories since 1997. During this time we have studied the prey of Peregrines in the nests, recording 931 prey […]
Does year-round territoriality rather than habitat saturation explain delayed natal dispersal and cooperative breeding in the carrion crow?
Carrion Crow (Corvus corone corone) Science Article 4 abstract The ecological factors that promote delayed dispersal of offspring in cooperatively breeding bird species are poorly understood. While single population studies have supported the view that natal dispersal is delayed as a consequence of lack of suitable breeding vacancies (ecological constraints hypothesis), recent theoretical models claim […]
Habitat selection of Hooded and Carrion Crows in the alpine hybrid zone
Carrion Crow (Corvus corone corone) Science Article 3 abstract Habitat selection of co-existing Hooded Crows Corvus corone cornix and Carrion Crows C. c. corone was studied in the Susa valley, an alpine valley in the Iitalian hybrid zone. Foraging habitat use by the two races was not significantly different during the autumn-winter whereas it was […]
DEMOGRAPHIC AND POPULATION RESPONSES OF CAPE MAYWARBLERS WINTERING IN MULTIPLE HABITATS
Cape May Warbler (Dendroica tigrina) Science Article 2 abstract Wintering Cape May Warblers (Dendroica tigrina) were studied in three habitats along an altitudinal gradient in the Dominican Republic. Results of this study are some of the first to link both population responses and individual condition of nonbreeding birds to prevailing ecological conditions across divergent habitats. […]
The Cape May Warbler (Dendroica tigrina) as an Abundant Autumnal Migrant and as a Destructive Grape Juice Consumer at Berwyn, Pa.
Cape May Warbler (Dendroica tigrina) Science Article 1 abstract For several years, previous to the crushing sleet of the past winter, a pie cherry tree crowned with the foliage of a fugitive Clinton grapevine overhung my shop platform; and a thirty foot pine bending under the weight of several Niagara grapevine runners, stood close to […]
Ecological relationships between feather mites (Acari) and wild birds ofEmberizidae (Aves) in a fragment of Atlantic Forest in northeastern Brazil
Burnished-buff Tanager (Tangara cayana) 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 […]
Site fidelity in the Canary Islands stonechat Saxicoladacotiae in relation to spatial and temporalpatterns of habitat suitability
Canary Islands Stonechat (Saxicola dacotiae) Science Article 2 abstract We investigate the degree of territory faithfulness of the Canary Islands stonechat Saxicola dacotiae, an endemic bird species of the semi-arid island of Fuerteventura (Canary Islands, Spain), and the spatial and temporal variability of habitat traits related to its breeding success over its whole distribution range. […]
Divorce in the Canary Islands Stonechat (Saxicola dacotiae)
Canary Islands Stonechat (Saxicola dacotiae) Science Article 1 abstract I report the first case of divorce for the Canary Islands Stonechat (Saxicola dacotiae), anendemic bird species of the semiarid island of Fuerteventura (Canary Islands, Spain). I studied 72 pairs during three breeding seasons (2000-2001, 2001-2002, and 2002-2003). Juan Carlos Illera, Wilson Bulletin 117(3):317-319, 2005 Download […]