Mate, neighbour and stranger songs:a female song sparrow perspective

Song Sparrow (Melospiza melodia) Science Article 10 abstract We investigated discrimination by female song sparrows, Melospiza melodia, between different categoriesof male song using the copulation solicitation display as a preference assay. Females respondedmost strongly to songs recorded from their mates, less strongly to songs of neighbouring males A. L. O’LOGHLEN & M. D. BEECHER, ANIMAL […]

Synergistic effects of food and predators onannual reproductive success in song sparrows

Song Sparrow (Melospiza melodia) Science Article 16 abstract The behaviour literature is full of studies showing that animals in every taxon balance the probability ofacquiring food with the risk of being preyed upon. While interactions between food and predators clearlyoperate at an individual scale, population-scale studies have tended to focus on only one factor at […]

Inbreeding depresses immune response insong sparrows (Melospiza melodia): directand inter-generational effects

Song Sparrow (Melospiza melodia) Science Article 3 abstract A thorough knowledge of relationships between host genotype and immunity to parasitic infection isrequired to understand parasite-mediated mechanisms of genetic and population change. It has beensuggested that immunity may decline with inbreeding. Jane M. Reid et al, Proc. R. Soc. Lond. B (2003) 270, 2151-2157 Download article […]

Social influences during song development in the song sparrow:a laboratory experiment simulating field conditions

Song Sparrow (Melospiza melodia) Science Article 14 abstract Oscine songbirds are exposed to many more songs than they keep for their final song repertoire and littleis known about how a bird selects the particular song(s) to sing as an adult. We simulated in thelaboratory the key variables of the natural song learning environment and examined […]

Geographic analysis of nucleotide diversity and song sparrow (Aves: Emberizidae) population history

Song Sparrow (Melospiza melodia) Science Article 11 abstract Mitochondrial DNA (mtDNA) control-region (CR) sequences were analysed to address three questions regarding the evolution of geographical variation in song sparrows. (i) Are mtDNA sequences more informative about phylogenetic relationships and population history than previously published restriction fragment (RFLP) data? ADAM J. FRY & ROBERT M. ZINK, […]

Seasonal modulation of sickness behavior in free-living northwestern songsparrows (Melospiza melodia morphna)

Song Sparrow (Melospiza melodia) Science Article 5 abstract A variety of vertebrate species modulate immunefunction on a seasonal basis to cope with seasonal energydeficits and competing life-history demands, such asreproduction. Most studies to date have focused uponseasonal variation of cellular and humoral immunity,while neglecting behavioral responses to infection Noah T. Owen-Ashley and John C. Wingfield, […]

Northwestern song sparrow populations show geneticeffects of sequential colonization

Song Sparrow (Melospiza melodia) Science Article 15 abstract Two genetic consequences are often considered evidence of a founder effect: substantialloss in genetic diversity and rapid divergence between source and founder populations.Single-step founder events have been studied for these effects CHRISTIN L. PRUETT and KEVIN WINKER, Molecular Ecology (2005) 14 , 1421-1434 Download article download full […]

Effects of early nutrition on growth rate and adult size in songsparrows Melospiza melodia

Song Sparrow (Melospiza melodia) Science Article 4 abstract We manipulated the quantity of food provided to hand-reared song sparrows Melospizamelodia from 3 to 18 days post-hatching, a period when young birds in the wild areespecially likely to experience nutritional stress. A control group was given unlimitedfood, while an experimental group was limited to 60% of […]