Tree Swallow (Tachycineta bicolor) Science Article 13 abstract Past and continuing discharges of polychlorinated biphenyls (PCBs) have contaminated the natural resources of the Hudson River. The Hudson River Natural Resource Trustees – New York State, the U.S. Department of Commerce, and the U.S. Department of the Interior – are conducting a natural resource damage assessment […]

Tree Swallow (Tachycineta bicolor) Science Article 8 abstract Much previous research has focussed on the role of food supply in determining thegrowth and the survival of avian offspring. More recently, acid deposition in someecosystems has demonstrated that in addition to energy, birds also need to acquiresufficient nutrients such as calcium to be successful. Whether procurement […]

Tree Swallow (Tachycineta bicolor) Science Article 16 abstract Despite considerable interest in its occurrence or potential occurrence (e.g., Lorenz 1963), both direct and circumstantial evidence of intraspecific killing in adult passerinesis rare (see Davis 1940, Cottrille 1950, Grubbs 1977, Loflin 1982). The purpose of this note is to add to this meager data base by […]

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. […]