Eskimo Curlew (Numenius borealis) Science Article 1 abstract From the shores of the Arctic Ocean, Where they breed, to Patagonia, where they probably Winter (Ibis, 1878, page 404), is a journey of seven thousand miles; yet the Eskimo CurleWs, familiarly known as Doughbirds, compass it every year on their migrations. GEORGE h. MACKAY, The AUK(9)1:16-21, […]
Category: Charadriiformes
HYBRIDIZATION OF A SANDWICH AND ELEGANT TERN IN CALIFORNIA
Elegant Tern (Thalasseus elegans) Science Article 2 abstract The Sandwich Tern (Sterna sandvicensisis) a widespread breeding species on the Atlantic coasts of Europe and North America (AOU 1983, Cramp 1985) and the Caribbean (AOU 1983). On the Pacific coast it winters south to Colombia (Hilty and Brown 1986), Ecuador (Ridgely 1981), and Peru (Junge and […]
CAROTENOIDS PRODUCE FLUSH IN THE ELEGANT TERN PLUMAGE
Elegant Tern (Thalasseus elegans) Science Article 3 abstract Adult Elegant Terns (Sterna elegans), Roseate Terns (S. dougallii), many gulls (Laridae), several pelicans (Pelecanus spp.), the Common Merganser (Mergus merganser), and ptarmigans (Lagopus spp.) display a pink flush on their white body feathers (Stresemann 1927-1934; see also Vijlker 1964, Hijhn and Singer 1980, Harrison 1983). Called […]
Functional association of bill morphology and foragingbehaviour in calidrid sandpipers
Dunlin (Calidris alpina) Science Article 12 abstract Foraging behaviour in birds co-varies with bill morphology. Shorebirds exhibit pronouncedinter- and intra-specific variation in bill length and shape as well as in foraging behaviour.Pecking, or feeding on epifaunal intertidal invertebrates, is associated with a straight bill, while probing,feeding on infaunal prey S. NEBEL et al, University of […]
Mitochondrial Control-Region Sequences in Two Shorebird Species, the Turnstone and the Dunlin, and Their Utility in Population Genetic Studies
Dunlin (Calidris alpina) Science Article 2 abstract Because of its rapid rate of sequence evolution, al most strictly maternal mode of inheritance, and lack of recombination, mitochondrial DNA (mtDNA) is the molecule of choice both for studies of intraspecific sequence divergence (Wilson et al. 1985; but see Gyllensten et al. I99 1) and for constructing […]
Hypervariable-control-region sequences reveal global population structuring in a long-distance migrant shorebird, the Dunlin (Calidris alpina)
Dunlin (Calidris alpina) Science Article 1 abstract Hypervariable segments of the control region of mtDNA as well as part of the cytochrome b gene of Dunlins were amplifed with PCR and sequenced directly. The 910 base pairs (bp) obtained for each of 73 individuals complete another of the few sequencing studies that examine the global […]
Incidental Kill of Dunlin and Killdeer by Strychnine
Dunlin (Calidris alpina) Science Article 10 abstract Strychnine poisoning of 36 dunlin (Calidris alpina) and two killdeer (Charadriusvociferus) in Yolo County, California (USA) was documented from 1 1 to 17 December 1990. Birds were found dead on a field containing treated wheat seeds (337 zg strychnine/g seed) in postures consistent with the known physiopathology of […]
Stable Isotope Analysis Reveals That Agricultural HabitatProvides an Important Dietary Component for NonbreedingDunlin
Dunlin (Calidris alpina) Science Article 4 abstract Although shorebirds spending the winter in temperate areas frequently use estuarine and supratidal (upland) feeding habitats, the relative contribution of each habitat to individual diets has not been directly quantified. We quantified the proportional use that Calidris alpina pacifica (Dunlin) made of estuarine vs. terrestrial farmland resources on […]
Testing the effects of recreational disturbance on two upland breeding waders
Dunlin (Calidris alpina) Science Article 7 abstract Previous work has shown that Golden Plovers Pluvialis apricaria guarding chicks utilize heavily disturbed habitat at a lower rate than surrounding areas, but that such rates of avoidance are reduced when the movement of people is restricted to a surfaced footpath. However, there remained some unanswered questions, which […]
Effects of weather on daily body mass regulation in wintering dunlin
Dunlin (Calidris alpina) Science Article 3 abstract We investigated the influence of changes in weather associated with winter storms on mass balance, activity and food consumption in captive dunlin (Calidris alpina) held in outdoor aviaries, and compared the aviary results with weather-related body mass differences in free-living dunlin collected at Bolinas Lagoon, California. Captive birds […]