| partitioning global change: assessing the relative importance of changes in climate and land cover for changes in avian distribution. | understanding the relative impact of climate change and land cover change on changes in avian distribution has implications for the future course of avian distributions and appropriate management strategies. due to the dynamic nature of climate change, our goal was to investigate the processes that shape species distributions, rather than the current distributional patterns. to this end, we analyzed changes in the distribution of eastern wood pewees (contopus virens) and red-eyed vireos (vireo o ... | 2019 | 30847087 |
| fat, weather, and date affect migratory songbirds' departure decisions, routes, and time it takes to cross the gulf of mexico. | approximately two thirds of migratory songbirds in eastern north america negotiate the gulf of mexico (gom), where inclement weather coupled with no refueling or resting opportunities can be lethal. however, decisions made when navigating such features and their consequences remain largely unknown due to technological limitations of tracking small animals over large areas. we used automated radio telemetry to track three songbird species (red-eyed vireo, swainson's thrush, wood thrush) from coas ... | 2015 | 26578793 |
| a systematic review of the subfamily syringophilinae (acari: syringophilidae) of the nearctic region. part 1: quill mites associated with passerines (aves: passeriformes). | quill mites belonging to the subfamily syringophilinae lavoipierre, 1953 associated with the nearctic passeriform birds are revised. all of the 49 known species, which are grouped in seven genera, are recorded. among them, four new species are described: syringophiloidus audubioni sp. nov. from spizella breweri (cassini) (emberizidae), syringophilopsis catesbyi sp. nov. from vireo olivaceus (linnaeus) (vireonidae), s. wilsoni sp. nov. from pheucticus melanocephalus (swainson) (cardinalidae), and ... | 2016 | 27394276 |
| magnetic information calibrates celestial cues during migration. | migratory birds use celestial and geomagnetic directional information to orient on their way between breeding and wintering areas. cue-conflict experiments involving these two orientation cue systems have shown that directional information can be transferred from one system to the other by calibration. we designed experiments with four species of north american songbirds to: (1) examine whether these species calibrate orientation information from one system to the other; and (2) determine whethe ... | 2000 | 11032648 |
| fruit production, migrant bird visitation, and seed dispersal of guarea glabra in panama. | the relationship between bird visitation and the size of the available fruit crop was studied at an understory tree (guarea glabra vahl, meliaceae) in the tropical wet forest of barro colorado island, panama canal zone. twelve resident species and seven north american migrant species fed on the bright orange arilloids (seeds with arils), which were not depleted during the normal fruiting period. the number of individual visitors, the number of visiting species, and the number of seeds removed in ... | 1979 | 28309435 |
| bird-window collisions in the summer breeding season. | birds that reside in urban settings face numerous human-related threats to survival, including mortality from bird-window collisions (bwcs). our current understanding of this issue has largely been driven by data collected during spring and fall migration, and patterns of collision mortality during the summer breeding season remain relatively unexplored. we assessed bwcs during four breeding seasons (2009-2012) at a site in northwestern illinois, usa, by comparing the abundance, richness, migrat ... | 2014 | 25024923 |
| characterization of the reflective materials and organelles in the bright irides of north american blackbirds (icterinae). | the reflective materials in the iris stroma of bright-irised american blackbirds (icterinae, emberizidae) and the red-eyed vireo (vireo olivaceus) (vireonidae) were characterized using high-performance liquid chromatography (hplc) and diode-array detection. two purines, guanine and hypoxanthine, and two pteridines, leucopterin and xanthopterin, were detected in large amounts in all bright irides. the brown iris of the red-winged blackbird (agelaius phoeniceus) by comparison contained only small ... | 1996 | 8857673 |
| estimating the effects of habitat and biological interactions in an avian community. | we used repeated sightings of individual birds encountered in community-level surveys to investigate the relative roles of habitat and biological interactions in determining the distribution and abundance of each species. to analyze these data, we developed a multispecies n-mixture model that allowed estimation of both positive and negative correlations between abundances of different species while also estimating the effects of habitat and the effects of errors in detection of each species. usi ... | 2015 | 26287671 |
| a review of the mite subfamily harpirhynchinae (acariformes: harpirhynchidae)--parasites of new world birds (aves: neognathae). | mites of the subfamily harpirhynchinae (acariformes: cheyletoidea: harpirhynchidae) associated with neognathous birds (aves: neognathae) in the new world are revised. in all, 68 species in 8 genera are recorded. among them, 27 new species and 1 new genus are described as new for science: harpyrhynchoides gallowayi bochkov, oconnor and klompen sp. nov. from columba livia (columbiformes: columbidae) from canada (manitoba), h. zenaida bochkov, oconnor and klompen sp. nov. from zenaida macroura (col ... | 2015 | 26624161 |
| impacts of chronic anthropogenic noise from energy-sector activity on abundance of songbirds in the boreal forest. | the effects of human activities in forests are often examined in the context of habitat conversion. changes in habitat structure and composition are also associated with increases in the activity of people with vehicles and equipment, which results in increases in anthropogenic noise. anthropogenic noise may reduce habitat quality for many species, particularly those that rely on acoustic signals for communication. we compared the density and occupancy rate of forest passerines close to versus f ... | 2008 | 18616740 |
| molecular identification of blood-meal sources in culiseta melanura and culiseta morsitans from an endemic focus of eastern equine encephalitis virus in new york. | eastern equine encephalitis (eee) virus perpetuates in an enzootic cycle involving ornithophilic mosquito vectors, principally culiseta melanura (coquillett) and avian amplification hosts. to better understand the role of cs. melanura and culiseta morsitans (theobald) in the epizootiology of eee virus, we collected blood-fed mosquitoes between 31 may and 15 october 2004 at two sites associated with an eee virus focus in central new york and identified the source of vertebrate blood by nucleotide ... | 2006 | 17172382 |
| five new feather mites of the subfamily pterodectinae (acariformes: astigmata: proctophyllodidae) from passerines and hummingbirds (aves) of brazil. | five new species of feather mites (proctophyllodidae: pterodectinae) are described from passerines and hummingbirds of brazil: amerodectes longifuscus sp. nov. from poospiza lateralis (nordmann, 1835) (passeriformes: emberizidae), a. vireonis sp. nov. from vireo olivaceus (linnaeus, 1766) (passeriformes: vireonidae), tyrannidectes synallaxis sp. nov. from synallaxis ruficapilla vieillot, 1819 (passeriformes: furnariidae), trochilodectes willisi sp. nov. from phaethornis eurynome (lesson, 1832) ( ... | 2016 | 27615933 |
| the ecology of host immune responses to chronic avian haemosporidian infection. | host responses to parasitism in the wild are often studied in the context of single host-parasite systems, which provide little insight into the ecological dynamics of host-parasite interactions within a community. here we characterized immune system responses to mostly low-intensity, chronic infection by haemosporidian parasites in a sample of 424 individuals of 22 avian host species from the same local assemblage in the missouri ozarks. two types of white blood cells (heterophils and lymphocyt ... | 2014 | 25179282 |
| temporal pattern shifts to avoid acoustic interference in singing birds. | two species of forest birds, the least flycatcher and the red-eyed vireo, when breeding in the same season in the same habitat, adjust their temporal pattern of singing to avoid the overlapping of songs. the avoidance of acoustic interference is more marked in the flycatcher, which has a briefer song than the vireo. | 1974 | 17790627 |
| effect of dietary fatty acid composition on depot fat and exercise performance in a migrating songbird, the red-eyed vireo. | most migrating birds accumulate lipid stores as their primary source of energy for fueling long distance flights. lipid stores of birds during migration are composed of mostly unsaturated fatty acids; whether such a fatty acid composition enhances exercise performance of birds is unknown. we tested this hypothesis by measuring metabolic rate at rest and during intense exercise in two groups of red-eyed vireos, a long-distance migratory passerine, fed either a diet containing 82% unsaturated fat ... | 2005 | 15781888 |
| spatially explicit maximum likelihood methods for capture-recapture studies. | live-trapping capture-recapture studies of animal populations with fixed trap locations inevitably have a spatial component: animals close to traps are more likely to be caught than those far away. this is not addressed in conventional closed-population estimates of abundance and without the spatial component, rigorous estimates of density cannot be obtained. we propose new, flexible capture-recapture models that use the capture locations to estimate animal locations and spatially referenced cap ... | 2008 | 17970815 |
| sexual selection does not influence minisatellite mutation rate. | moller and cuervo report a significant trend between minisatellite mutation rate and the frequency of extra-pair copulations in birds. this is interpreted as evidence that the high rate of evolution demanded by sexual selection has itself selected for a higher mutation rate in species where selection is strongest. however, there are good a priori reasons for believing that their method of calculating minisatellite mutation rates will be highly error prone and a poor surrogate measure of the evol ... | 2009 | 19133116 |
| minisatellite mutation rates increase with extra-pair paternity among birds. | amos suggested recently that a previously reported positive relationship between minisatellite mutation rates and extra-pair paternity among species of birds was confounded by transcription errors and selective inclusion of studies. here we attempted to replicate the results reported by amos, but also tested for the relationship by expanding the data base by including studies published after our original paper. | 2009 | 19442282 |
| experimental evidence for the interplay of exogenous and endogenous factors on the movement ecology of a migrating songbird. | movement patterns during songbird migration remain poorly understood despite their expected fitness consequences in terms of survival, energetic condition and timing of migration that will carry over to subsequent phases of the annual cycle. we took an experimental approach to test hypotheses regarding the influence of habitat, energetic condition, time of season and sex on the hour-by-hour, local movement decisions of a songbird during spring stopover. to simulate arrival of nocturnal migrants ... | 2012 | 22844528 |
| cryptic speciation and gene flow in a migratory songbird species complex: insights from the red-eyed vireo (vireo olivaceus). | migratory species that alternate between sympatry and allopatry over the course of an annual cycle are promising subjects for studies seeking to understand the process of speciation in the absence of strict geographic isolation. here we sought to identify cryptic species and assess rates of gene flow in a clade of neotropical migrant songbirds in which geography and taxonomy are currently out of sync: the red-eyed vireo (v. olivaceus) species complex. phylogenetic, clustering, and statistical sp ... | 2017 | 28502764 |
| colorimetric analysis of the dorsal plumage of the red-eyed vireo (aves: vireonidae) in canada. | | 1971 | 5575666 |
| testosterone and prolactin in two songbirds that differ in paternal care: the blue-headed vireo and the red-eyed vireo. | we investigated the hypothesis that species differences in paternal care in birds may result from differences in concentrations of circulating testosterone (t) and prolactin (prl). concentrations of plasma t and prl were compared in breeding blue-headed vireos (vireo solitarius) and red-eyed vireos (vireo olivaceus), passerine congeners with biparental and maternal incubation, respectively. in male blue-headed vireos, plasma t remained low from prenesting to fledgling stages; whereas in male red ... | 2003 | 14644638 |
| diet preferences for specific fatty acids and their effect on composition of fat reserves in migratory red-eyed vireos (vireo olivaceous). | fatty acid composition of body fat in birds often differs between bird species and between seasons, and changes in diet may be responsible for this variation. we tested two related hypotheses using red-eyed vireos, a long-distance migratory songbird: (1) birds prefer diets with certain fatty acids, and (2) fatty acid composition of the diet primarily determines the composition of lipid reserves. during paired-choice experiments, vireos preferred semi-synthetic diets with triolein (81% digestive ... | 2004 | 15369840 |
| migrating songbirds on stopover prepare for, and recover from, oxidative challenges posed by long-distance flight. | managing oxidative stress is an important physiological function for all aerobic organisms, particularly during periods of prolonged high metabolic activity, such as long-distance migration across ecological barriers. however, no previous study has investigated the oxidative status of birds at different stages of migration and whether that oxidative status depends on the condition of the birds. in this study, we compared (1) energy stores and circulating oxidative status measures in (a) two spec ... | 2015 | 26355277 |