Species richness, composition, and abundance of farmland birds were compared between point counts (50-m, 100-m, and 150-m radius half circles) and territory mapping on three 40-ha plots in Québec, Canada. Point counts of smaller radii tended to have larger density estimates than counts of larger radii. Territory mapping detected 10 species more than 150-m radius point counts. Territory mapping ...

The dark-eyed junco (junco hyemalis) exhibits differential migration in autumn that, in general, results in females overwintering south of males, and young within each sex overwintering north of older birds. Individuals overwintering at higher latitudes face less predictable and more challenging environmental conditions. Rapid increases in circulating levels of the energy-regulating glucocortic...

The biodiversity of the Southern Balkans, part of the Mediterranean global biodiversity hot-spot, is threatened by land use intensification and abandonment, the latter causing forest encroachment of formerly open habitats. We investigated the impact of forest encroachment on butterfly species richness, community species composition and the representation of life history traits by repeated seaso...

We studied a collection of lice from Argentina, Brazil, Paraguay and Chile containing all four known species and one new species (described herein) in the genus Tinamotaecola, parasites of birds of the families Cariamidae and Tinamidae. We also (1) describe previously unknown second and third nymphal instars of two Tinamotaecola species, (2) discuss hosts and geographical ranges for all Tinamot...

background: the intracellular protozoan parasites of the genus haemoproteus occur in different avian hosts all over the world. various genus of blood sucking insects’ families such as hippoboscidae and ceratopogonidae could transmit haemoproteus in avian hosts. there are very limited number of studies on wild infected birds with blood parasites in iran, so the aim of this study was to determine...

The Caucasus, at the border of Europe and Asia, is important for migration and over-wintering of wild waterbirds. Three flyways, the Central Asian, East Africa-West Asia, and Mediterranean/Black Sea flyways, converge in the Caucasus region. Thus, the Caucasus region might act as a migratory bridge for influenza virus transmission when birds aggregate in high concentrations in the post-breeding,...

The Japanese quail has been utilized as a research species in establishing the genetic relationships that may also be present in other species. Divergent phenotypic selection for 4-wk BW was conducted for three generations in high (HW) and low (LW) lines. Within each line, 50 females and 25 males were selected among 600 birds, based on 4-wk BW. Mean BW at 4 wk of age in the base generation was ...

7 Introduction Many grasslands along rivers in the Great Plains have been converted to agricultural lands during the last century (Sidle et al., 1989) or lost to woody encroachment due to suppression of wildfires and alterations to hy-The Platte River valley in central Nebraska is an important migratory stopover site for waterfowl (Sharpe et al. portions of the river designated as critical habi...

536 West Nile (WN) virus is a mosquitoborne virus of the genus Flavivirus, family Flaviviridae. WN, Japanese encephalitis, St. Louis encephalitis, Murray Valley encepha-litis, and Kunjin viruses (along with other viruses) belong to the Japanese encephalitis serocomplex and are closely related to each other genetically and ecologically. The Japanese serocomplex of viruses has a near global distr...