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66 results for “Barn Swallow”
Contrasting sensitivity of nestling and fledgling Barn Swallow Hirundo rustica body mass to local weather conditions
<p>Local weather can influence the growth and development of young birds, either indirectly, by modifying prey availability, or directly, by affecting energetic trade‐offs. Such effects can have lasting implications for life history traits, but the nature of these effects may vary with the developmental stage of the birds, and over timescales from days to weeks. We examined the interactive effects of temperature, rainfall and wind speed on the mass of nestling and fledgling Barn Swallows <i>Hirundo rustica</i>, both on the day of capture and averaging weather across the time since hatching. At the daily timescale, nestling mass was negatively correlated with temperature, but the strength of this association depended on the level of rainfall and wind speed; nestlings were typically heavier on dry or windy days, and the negative effect of temperature was strongest under calm or wet conditions. At the early lifetime timescale (i.e. from hatching to post‐fledging), nestling mass was negatively correlated with temperature at low wind speed. Fledgling body mass was less sensitive to weather; the only weather effects evident were a negative correlation with temperature at the daily scale under high rainfall that became slightly positive under low rainfall. These changes are consistent with weather effects on availability and distribution of insects within the landscape (e.g. causing high concentrations of flying insects), and with the effects of weather variation on nest microclimate. These results together demonstrate the impacts of weather on chick growth, over immediate (daily) and longer term (nestling/fledgling lifetime) timescales. This shows that sensitivity to local weather conditions varies across the early lifetime of young birds (nestling‐fledgling stages) and illustrates the mechanisms by which larger scale (climate) variations influence the body condition of individuals.</p>
Barn Swallow data Conte NWR
<p>Barn Swallow data Conte NWR. Brood frequencies, clutch sizes, nest reuse frequencies.</p>
Data from: Expression of multiple sexual signals by fathers and sons in the East-Mediterranean barn swallow: Are advertising strategies heritable?
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Temperature and rainfall shape the breeding ecology of Barn Swallows Hirundo rustica in an arid region
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Integrating stable isotopes, parasite and ring-reencounter data to quantify migratory connectivity - a case study with Barn Swallows breeding in Switzerland, Germany, Sweden and Finland
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Data from: Quantitative genetics of migration syndromes: a study of two barn swallow populations
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Data from: Physiological conditions and genetic controls of phaeomelanin pigmentation in nestling barn swallows
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Data from: Foraging at the edge of the world: low‐altitude, high‐speed maneuvering in barn swallows
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Data from: Matching geographical assignment by stable isotopes with African non-breeding sites of Barn swallows Hirundo rustica tracked by geolocation
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Data from: Phenotypic differentiation is associated with divergent sexual selection among closely related barn swallow populations
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Data from: Brood size, telomere length, and parent-offspring color signaling in barn swallows
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Data from: Better-surviving barn swallow mothers produce more and better-surviving sons
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Data from: Arrival date and microorganisms in barn swallows
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Contrasting sensitivity of nestling and fledgling Barn Swallow Hirundo rustica body mass to local weather conditions
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Data from: Protoporphyrin-based eggshell pigmentation is associated with female plumage colouration and predicts offspring sex ratio in the barn swallow
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Data from: A comparative study of insect abundance and reproductive success of barn swallows Hirundo rustica in two urban habitats
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Data from: Haemosporidian parasites depress breeding success and plumage coloration in female barn swallows (Hirundo rustica)
Parasites are major effectors of natural selection and also play a role in sexual selection processes. Haemosporidian blood parasites are common in vertebrates and have been shown to vary in their effects depending on both the parasite and host species, on the host trait investigated as well as on host condition and stage of infection. Here we investigated infection of adult barn swallows (Hirundo rustica) by Plasmodium, Leucocytozoon and Haemoproteus species during the chronic stage of infection and the consequences for host fitness traits. Prevalence was higher than 10% only for Plasmodium. Chronic stage infection by Plasmodium was associated with reduced female breeding success, but did not affect breeding dates. Infection did not affect the expression of male secondary sexual traits (tail length and melanin‐based plumage coloration), but was associated with paler coloration of females. Finally, we found a negative effect of infection by Plasmodium on feather growth rate in older but not in yearling individuals. Because feathers are moulted during wintering in sub‐Saharan Africa where infection of barn swallows by Plasmodium occurs, our results suggest that male secondary sexual traits have little potential to reveal acute‐stage infection whereas plumage coloration of females may advertise their infection status. In addition, these results suggest that infection by Plasmodium can influence the course of plumage moult. Thus, our results add to the observations of negative effects of haemosporidian infection on fitness traits in birds and provides evidence that these effects can vary among traits and in relation to age and sex.
Data from: Cohabitation with farm animals rather than breeding effort increases the infection with feather-associated bacteria in the barn swallow Hirundo rustica
Feather-associated bacteria are widespread inhabitants of avian plumage. However, the determinants of the between-individual variation in plumage bacterial loads are less well understood. Infection intensities can be determined by ecological factors, such as breeding habitat, and can be actively regulated by hosts via preening. Preening, yet, is a resource intensive activity, and thus might be traded-off against reproductive investment in breeding birds. Here, we studied barn swallows Hirundo rustica to assess the bacterial cost of reproduction in relation to nesting site micro-habitats. Barn swallows prefer to breed in the company of large-sized farm animals, although the presence of mammalian livestock in barns assures a warm and humid micro-climate that favours bacterial proliferation. Thus, we experimentally manipulated brood sizes of birds breeding in barns with, or without, farm animals and measured total cultivable bacteria (TCB) and feather-degrading bacteria (FDB) from the plumage. We found that the abundance of feather-associated bacteria (i.e. both TCB and FDB) in females, but not males, breeding in barns with livestock were significantly higher than in conspecifics breeding in empty barns. Plumage bacterial loads, however, were not affected by brood size manipulations in either sex. In addition, we report a negative relationship between both TCB and FDB and hatching date in females, and several sex and seasonal differences in plumage bacterial abundances. Our study is the first to show that breeding micro-habitat (i.e. livestock co-tenancy) has consequences for the abundance of feather-associated bacteria.
Barn Swallow banding data - Conte NWR
<p>Capture and recapture data, Barn Swallow project at Conte National Wildlife Refuge (Fort River)</p>
Barn Swallow clutch sizes 2022
<p>Clutch sizes of Barn Swallows, 2022, Conte NWR</p>
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OpenNeuro
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