Grey Catbird (Dumetella carolinensis) Science Article 5 abstract Although Howell (1932) stated that the Gray Catbird (Dumetella carolinensis) ‘breeds sparingly in northern and central Florida,’ some recent field workers in this state have viewed his statement skeptically. Of Howell’s seven references to Florida breeding, four were made by Oscar Baynard, some of whose records of’ […]
Category: Passeriformes
PREDATION BY GRAY CATBIRD ON BROWN THRASHER EGGS
Grey Catbird (Dumetella carolinensis) Science Article 3 abstract The gray catbird (Dumetella carolinensis) has been documented visiting and breakingthe eggs of artificial nests, but the implications of such observations are unclear because there is little cost in depredating an undefended nest. During the summer of 2001 at Konza Prairie Biological Station, Kansas, we videotaped a […]
Activity and predator escape performance of common greenfinches Carduelis chloris infected with sindbis virus
Greenfinch (Carduelis chloris) Science Article 1 abstract The fitness effects of parasites on their hosts are often unknown. For mostavian viruses, no records of clinical disease have been associated withinfections. In this study we tested if birds would alter their behaviour duringan infection with an avian virus that naturally occurs in passerines. Wemeasured spontaneous locomotion […]
The removal of colour rings by Greenfinches Carduelis chloris
Greenfinch (Carduelis chloris) Science Article 3 abstract This paper examines the effect of sex and ring colour on the frequency of removal of plastic colour rings by Greenfinches Carduelis chloris. Of 55 recaptures of 42 individuals, 22 (40%) had lost at least one of its colour rings. Females showed a tendency to remove colour rings […]
Structural conservation and variation in the mitochondrial control region of fringilline finches (Fringilla spp.) and the greenfinch (Carduelis chloris
Greenfinch (Carduelis chloris) Science Article 4 abstract We sequenced the entire control region and portions of flanking genes (tRNAPhe, tRNAGiu, and ND6) in the common chaffinch (Fringilla coelebs), blue chaffinch (F. teydea), brambling (F. montifringilla), and greenfinch (Carduelis chloris). In these finches the control region is similar in length (1,223-1,237 bp) and has the same […]
Sexing juvenile Greenfinches Carduelis chloris by the extent of black on the tail
Greenfinch (Carduelis chloris) Science Article 2 abstract There is increasing interest in the study of the evolution of sex ratios in birds. Correct assignment of sex to fledgling and juvenile birds is critical for studies that deal with differential sex allocation at nests or sexual variation in survival or dispersion rates. Here we describe a […]
Potential food resources and nestling food in the Great Reed Warbler (AcrocephMus arundinaceus arundinaceus) and Eastern Great Reed Warbler ( A crocephalus arundinaceus orientalis)
Great Reed-Warbler (Acrocephalus arundinaceus) Science Article 2 abstract The main ecological difference between the Great Reed Warbler (Acrocephalus arundinaceus arundinaceus) and Eastern Great Reed Warbler (Acrocephalus acrocephalus orientalis) lies in the density of breeding population, which in the Eastern subspecies studied in Japan is on average 10 times higher than that of European populations of […]
Habitat selection of two Acrocephalus warblers breeding in reed beds near Malacky (Western Slovakia).
Great Reed-Warbler (Acrocephalus arundinaceus) Science Article 3 abstract The study was carried out in 1999 and 2000 at three sites near Malacky, WSlovakia: Jakubovske rybniky ?shponds, Jakubovske
Antiparasite behaviour in response to experimental brood parasitism in the great reed warbler: a comparison of single and multiple parasitism
Great Reed-Warbler (Acrocephalus arundinaceus) Science Article 1 abstract Rejection of parasitic eggs is one of the most important adaptations of avian hosts against brood parasites. Multiple brood parasitism is relatively rare in hosts of the common cuckoo (Cuculus canorus), but naturally occurs when the rate of parasitism is high. We experimentally parasitised great reed warbler […]
Cavity Nesting by Great Kiskadees (Pitangus sulphuratus):Adaptation or Expression of Ancestral Behavior?
Great Kiskadee (Pitangus sulphuratus) Science Article 2 abstract Beginning with the work of von Ihering (1904), the nature of the nest has been used for formulating systematic hypotheses within the family Tyrannidae. Here, I provide several records of cavity nesting by Great Kiskadees( Pitangus ulphuratusI) .t hen discuss nest location (exposed vs. concealed) and nest […]