Tree Swallow (Tachycineta bicolor) Science Article 10 abstract Investment in one life-history stage can have delayed effects on subsequent life-history stages within a single reproductive bout. We experimentally heated tree swallow (Tachycineta bicolor) nests during incubation to test for effects on parental and nestling conditions. Females incubating in heated boxes maintained higher body condition and […]

Tree Swallow (Tachycineta bicolor) Science Article 5 abstract Endocrine disruptors have well-known effects on vertebrate population sex ratios, buta variety of chemicals can also affect sex ratios of invertebrates. We tested whether sex ratios of

Tree Swallow (Tachycineta bicolor) Science Article 3 abstract Oil sands mining is steadily expanding in Alberta, Canada. Major companies areplanning reclamation strategies for mine tailings, in which wetlands will be used for thebioremediation of water and sediments contaminated with polycyclic aromatic hydrocarbons andnaphthenic acids during the extraction process. A series of experimental wetlands were built […]

Tree Swallow (Tachycineta bicolor) Science Article 9 abstract Swallows are parasitized rarely by Brown-headed Cowbirds (Molothrus ater). I added cowbird eggs to 15 Tree Swallow (Tachycineta bicolor) nests. One egg disappeared and seven failed to hatch whereas 63 of 66 host eggs hatched. The seven cowbird hatchlings died in 3-12 (mean = 6.3) d, whereas […]

Tree Swallow (Tachycineta bicolor) Science Article 6 abstract We studied the reproductive biology of a box-nesting population of Tree SwallowsTachycineta bicolor in southeastern Wisconsin, USA. We were interested particularlyin the relationship between laying order and hatching order and the extent to whicheach was a predictor of nestling body mass. We found that laying order was […]

Red-rumped Swallow (Hirundo daurica) Science Article 1 abstract Published data describing the biometrics, moult and fat loads of migrant Red-rumped Swallows Hirundo daurica are scarce. Here we present data on wing and tarsus length, tail measurements, abdominal fat scores and weight for a sample of 457 birds captured at a reed-bed roost during autumn migration […]

Northern House-Martin (Delichon urbicum) Science Article 1 abstract Starting in 1961, from 50-100 villages and settlements in the industrial area of Hannover-Braunschweig (centred on Peine) have been checked at 5-year intervals to count the nesting populationof House Martin Delichon urbica and Barn Swallow Hirundo rustica, the method beinga direct nest count. The hitherto stable Barn […]

Crag Martin (Ptyonoprogne rupestris) Science Article 1 abstract From 1994 to 1999, we investigated how climatic conditions influence the laying dates and number of fledged young of the Crag Martin Ptyonoprogne rupestris, a poorly studied colonial martin that, like other aerial feeding birds, is supposed to be highly dependent on weather conditions. Laying dates were […]

Blue-and-white Swallow (Notiochelidon cyanoleuca) Science Article 1 abstract This Swallow has the upper plumage is dark, violaceous steel-blue; the under parts are pure white except for the blue-black under tail-coverts, the grayish-brown sides and flanks, and a few dusky spots in the center of the chest, which are lacking on some individuals. The tail is […]

Barn Swallow (Hirundo rustica) Science Article 2 abstract The constancy of laying date, clutch size, numbers of hatchlings and fledglings,and mean egg volume per clutch was studied in female Barn SwallowsHirundo rustica in central Poland in 1994-97 . Laying dates of firstclutches, clutch size, the number of hatchlings and fledglings and egg volumeshowed significant repeatability. […]