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Showing 1 to 11 of 11 for “"common terns"”.
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Feminization in common terns (Sterna hirunda) : relationship to persistent organic contaminants
… female-female pairings among endangered roseate terns (Sterna dougallii) on Bird Island in Buzzards Bay, Massachusetts prompted studies with common terns from the same site as a surrogate species. Over seventy percent (11115) of male common tern embryos sampled from this site in 1993 had testes …
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Life History Variation of Common Terns in the Gulf of Maine
… and environmental conditions.</p> <p>Common tern (<em>Sterna hirundo</em>) life history phenotypes vary between islands in the Gulf of Maine. Common terns on offshore islands (>10km from mainland) and nearshore islands (5 to 10km from mainland) lay smaller clutches, hatching chicks …
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Feminization in common terns (Sterna hirunda) : relationship to persistent organic contaminants
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Biology, 1998.
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QUANTIFYING DISTURBANCE FACTORS AND EFFECTS IN COMMON TERNS (STERNA HIRUNDO) USING VISUAL, AUDIO, AND REPRODUCTIVE DATA
The common tern is designated as a species of special concern in Upstate New York. The largest inland tern colony in New York is located on Oneida Lake, which is habitat to many other colonial waterbird species and an area of high human use during the tern breeding season. In addition to …
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Foraging ecology and parental care of common terns (Sterna hirundo) nesting in Windermere Basin, Lake Ontario
… This study investigated spatial and temporal patterns of foraging and chick-provisioning among 23 radio-tagged male common terns nesting at Hamilton Harbour, Lake Ontario during 1991 and 1992. Telemetry data were collected concurrently with behavioural observations from an elevated blind. Terns …
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The bioaccumulation of persistent contaminants by zebra mussels and their effects on state-endangered common terns
Common terns currently are listed as endangered or threatened in many states, including Illinois, Vermont, Pennsylvania, Ohio, Wisconsin, Michigan, and New York, and a species of special concern by the U.S. Fish and Wildlife Service (USFWS, 2002). The sole remaining nesting colony in Illinois is …
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„The spatial and temporal link between Common Terns Sterna hirundo and their prey fish in the Wadden Sea“
Der Einfluss räumlicher und zeitlicher Verteilungsmuster von Fischen auf die Reproduktion von Flussseeschwalben im Wattenmeer wurde untersucht. Langfristige Veränderungen des Bruterfolges konnten mit der Heringsabundanz in der Nordsee erklärt werden. Die Nahrungsfischdichte hatte einen größeren …
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Evaluating the Responses of Least Terns, Common Terns, Black Skimmers, and Gull-billed Terns to Military and Civilian Aircraft and to Human Recreation at Cape Lookout National Seashore, North Carolina
… overflights compared with control periods. Least terns reduced incubation by a mean of 12% when pedestrians were observed near nests (S = -2.2, p = 0.04). Demographic effects from overflights or recreation are unlikely given the patterns of use in this study. Least tern demographic rates were …
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Nest-site selection, nocturnal nest desertion, and productivity in a common tern (<i>sterna hirundo</i>) colony at Detroit River, Michigan
<p>Common terns are declining in the Great Lakes region and represent a population relatively distinct from that of eastern North America. On an artificial site, I studied the substrate and vegetation preference and productivity of nesting terns at two scales: general habitat and nest-site. Terns …
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Potential Interaction Analysis of Offshore Wind Energy Areas and Breeding Avian Species on the US Mid-Atlantic Coast
… <p>We also collected GPS location data on common terns (<em>Sterna hirundo</em>) at Dawson Shoals, Virginia during their 2017 nesting season. We analyzed their movement and behavior in relation to offshore wind sites. We determined that common terns most often utilized an area roughly half …
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Parental care in the common tern (Sterna Nirundo): sexual roles in a monogamous seabird
The parental behaviour of male and female Common Terns (Sterna hirundo) was documented throughout two breeding seasons at a colony near Port Colborne , Ontario. Thirteen and fourteen pairs of terns were chosen for intensive study in 1982 and 1983, respectively. The delivery of fish by males to …