Red-breasted Nuthatch (Sitta canadensis) Science Article 2 abstract On 15 September 1990 we collected a Red-breasted Nuthatch (Sitta canadensis) at Rancho Casa Verde. western slope of the Sierra Jubrez, east of Ensenada GORGONIO RUIZ-CAMPOS and LORENZO QUINTANA-BARRIOS, Western Birds 22:189-190, 1991 Download article download full text (pdf)
Category: Passeriformes
Red-eyed Vireo (Vireo olivaceus)
Red-eyed Vireo (Vireo olivaceus) Science Article 2 abstract Over the past several years, songbirds and the reasons for declines in their populationshave been a focal point of interest. Many species of neotropical songbirds birds haveexperienced population declines due to losses and fragmentation of breeding, wintering, andmigratory habitats. These long-distance migrants tend to be more vulnerable […]
GENETIC EVIDENCE FOR RELATIONSHIPS AMONGTHE RED-EYED, YELLOW-GREEN, ANDCHIVI VIREOS
Red-eyed Vireo (Vireo olivaceus) Science Article 4 abstract One of the most enduring puzzles in the systematics of New World birds concerns the relationships and taxonomic status of forms in the Red-eyed, Yellow-green and Chivi Vireo complex. In recent decades, the latter two taxa have been treated either as distinct species (A.O.U. 195 7, Hamilton […]
NEST SITE SELECTION AND NESTING SUCCESS OF THE REDEYEDVIREO IN CENTRAL PENNSYLVANIA
Red-eyed Vireo (Vireo olivaceus) Science Article 1 abstract We compared nest placement and characteristics of nesting habitat used by Red-eyed Vireos(Vireo olivaceous) in deciduous forests of central Pennsylvania during the breeding seasons of 1998 and 1999.Nest patches versus random patches (0.04-ha circular plots centered on nests or random points, respectively)and successful versus unsuccessful nest patches […]
RED-EYED VIREOS HAVE DIFFICULTY RECOGNIZINGINDIVIDUAL NEIGHBORS’ SONGS
Red-eyed Vireo (Vireo olivaceus) Science Article 3 abstract I investigated recognition of individual neighbors’ songs in a migratory species with large repertoires, the Red-eyed Vireo (Vireo olivaceous). To test for abilities to recognize individual neighbors, I measured responses to playbacks of neighbors songs from appropriateand inappropriate boundaries in two different years. Because the responses to […]
The influence of male age and phenology on reproductive success of the red-breasted flycatcher (Ficedula parva)
Red-breasted Flycatcher (Ficedula parva) Science Article 1 abstract I studied arrival time, breeding phenology, and breeding success in relation to the age class (second year and older) of male red-breasted flycatchers for six breeding seasons (2000-2005) in the prim val Bialowieza Forest, eastern Poland. Older males, i.e. older than two years (ASY), arrived on average […]
First evidence of phenological change in a transcontinental migrant overwintering in the Indian sub-continent: the Red-breasted Flycatcher Ficedula parva
Red-breasted Flycatcher (Ficedula parva) Science Article 3 abstract We analysed data on the Red-breasted Flycatcher Ficedula parva collected in old- growth, oak-hornbeam stands in the primeval Forest, Poland during 1973- 2002. In this period, the Red-breasted Flycatcher’s return to its breeding sites became sig nificantly earlier whilst population size did not change significantly. We show […]
Is the later arrival of young male red-breasted flycatchers ( Ficedula parva ) related to their physical condition?
Red-breasted Flycatcher (Ficedula parva) Science Article 2 abstract Intraspecific variation in the arrival time of migratory birds to breeding grounds is common. Although this phenomenon has been explained in various ways, the condition-dependency of arrival is often evoked. I analyzed the arrival time of male red-breasted flycatchers Ficedula parva, a long-distance migratory passerine, in relation […]
Eggshell patterning in the Red-backed Shrike Lanius collurio: relation toegg size and potential function
Red-backed Shrike (Lanius collurio) Science Article 5 abstract Despite numerous studies on avian eggs, the function of eggshell patterning remains largely unknown. Using a museum collection of Red-backed Shrike clutches, we estimated the repeatability of characteristics describing the intensity and contrast of egg pigmentation, as well as egg size and shape. Digitalized photographs of eggs […]
Red-backed Shrike (Lanius collurio) nest performance in a declining British population: a comparison with a stable population in Poland
Red-backed Shrike (Lanius collurio) Science Article 7 abstract We compare the breeding ecology of Red-backed Shrike Lanius collurio prior to its effective extinction (in 1990) as a breeding bird in the UK with that of a stable population in southwestern Poland. We use breeding performancedata derived from theUK and Polish Nest Record Schemes. Although theclutch […]