Tree Sparrow (Passer montanus) Science Article 7 abstract This study is based on the spring temperaturesand laying dates of first eggs of threepasserines (sedentary: Great Tit, Parus majorand Tree Sparrow, Passer montanus; migratory:Starling, Sturnus vulgaris). Laying datesof first eggs were used as estimates of timingof breeding. The term ‘laying date’ is definedas the date of […]
Category: Passeridae
Fitness consequences of hybridization between house sparrows( Passer domesticus) and tree sparrows ( P. montanus)
Tree Sparrow (Passer montanus) Science Article 2 abstract Gene transfer may occur following hybridization between closely related species if hybrids are viable and able to breed with individuals of one or both of the parental species. House (Passer domesticus) and tree sparrows (P. montanus) occasionally hybridize and produce viable o.spring. Previously, we concluded that male […]
Reproductive effort of colonialand solitary breeding tree sparrows Passer montanus L.
Tree Sparrow (Passer montanus) Science Article 1 abstract A total of 250 nestboxes were arranged in five plots in a suburban area of Budapest, Hungary (19 deg 04’E, 47 deg 41’N). In each plot, 25 were placed at 50 m intervals to simulate solitary breeding and 25 3-5 m apart to simulate colonial breeding. Length […]
Parental Care, Male Desertion, and Reproductive Success in the Spanish Sparrow, Passer hispaniolensis
Spanish Sparrow (Passer hispaniolensis) Science Article 3 abstract Parental care in altricial birds is costly, and mate desertion can occur due to sexual conflict over the level of parental investment in the offspring. This cessation of parental care by 1 parent can affect the success of the current reproduction. In the Spanish Sparrow (Passer hispaniolensis), […]
Variation of nestling diet across the breeding season in Spanish Sparrow Passer hispaniolensis in southern Portugal
Spanish Sparrow (Passer hispaniolensis) Science Article 1 abstract […]. The study was carried out in May and June 2000 in Castro Verde, Southern Portugal (37 deg 41?N, 08 deg 03?W). The Castro Verde region is a cereal crop steppe, alternating with fallow grounds, which are usually grazed by sheep and cattle. The sparrows nest in […]
Spanish Sparrow Passer hispaniolensis breeding success in 2002 in southern Portugal
Spanish Sparrow (Passer hispaniolensis) Science Article 2 abstract […]. During the breeding season of 2002 (from May to June), the breeding biology of the Spanish Sparrow was studied in the region of Castro Verde (37 deg 41?N, 08 deg 03?W, Alentejo, Southern Portugal). The Castro Verde region is a cereal steppe with cereal crops alternating […]
Male Rock Sparrow (Petronia petronia) Nest Defence Correlates with Female Ornament Size
Rock Sparrow (Petronia petronia) Science Article 1 abstract We investigated the relationship between male nest defence and female breastpatch size in an alpine population of rock sparrow (Petronia petronia)in northernItaly. We presented a mounted weasel Matteo Griggio et al, Ethology 109, 659-669 (2003) Download article download full text (pdf)
Widespread local house-sparrow extinctions
House Sparrow (Passer domesticus) Science Article 3 abstract Agricultural intensification is blamed for the plummeting populations of these birds. Ian J. Deary, Martha C. Whiteman, Alison Pattie, John M. Starr, Caroline Hayward
Lifetime reproductive success in relation to morphology in the house sparrow Passer domesticus
House Sparrow (Passer domesticus) Science Article 7 abstract In this study we relate variation in lifetime reproductive success (LRS) of male and female house sparrows Passer domesticus to morphological characteristics. Our analyses demonstrated no sex-specific difference in the distribution of LRS. The variance in LRS was influenced mainly by variation in individual annual reproductive success, […]
Effects of experimental increase of corticosterone levelson begging behavior, immunity and parental provisioning ratein house sparrows
House Sparrow (Passer domesticus) Science Article 8 abstract Begging is a complex display that is supposed to honestly indicate the need for food of nestlings, and, usually, parents use this informationto adjust their investment in food provisioning. However, the mechanisms that ensure the honesty of begging as an indicator ofneed are still poorly known. Claire […]