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 […]
Category: Passeriformes
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 […]
Parental investment strategies in two species of nuthatch varywith stage-specific predation risk and reproductive effort
Red-breasted Nuthatch (Sitta canadensis) Science Article 1 abstract Life-history theory predicts that differences in reproductive effort and residual reproductive value amongspecies should result in differences in the level of risk that parents are willing to tolerate to themselvesversus their offspring. CAMERON K. GHALAMBOR & THOMAS E. MARTIN, ANIMAL BEHAVIOUR, 2000, 60, 263-267 Download article download […]
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 […]