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Showing 1 to 10 of 10 for “"Common tern."”.
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Selected aspects of common tern reproductive biology
… reproductive success were investigated at a Common Tern colony at Port Colborne, Ontario in 1976. In general three egg clutches hatched better than two egg clutches and early started clutches hatched eggs and fledged chicks better than late clutches; the fledging success of two and three egg …
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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 …
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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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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
… 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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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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Atmospheric and spatial drivers of egg abundance in beach nesting shorebirds across an urban-coastal gradient of the Rockaway Peninsula, New York
<p>Understanding the drivers of reproductive patterns in beach-nesting shorebirds is essential for conservation in dynamic coastal systems. This study evaluated the influence of atmospheric, geomorphological, and anthropogenic factors on egg abundance and nesting patterns across four distinct areas …
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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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Ecological role of mining ponds in Southern Coastal Mines, Namibia
… diamondiferous deposits along the south-western Namibian coastline has involved the construction of seawall berms to advance the coastline and permit mining in previously subtidal areas. Large areas are mined out to bedrock level by the removal of overburden (sand and gravel), and after …