Effects of motorboats and personal watercraft on flight behavior over a colony of common terns

Article Abstract:

The flight behavior of common terns, Sterna hirundo, in response to the presence of a motorboat or a personal watercraft is investigated by correlating the number of birds flying over the colony and the type and distance of the intruding watercraft. Results reveal that racing boats elicit a stronger response and that distance is inversely proportional to the magnitude of the flight response. The implications of these findings on conservation of nesting colonies are discussed.

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Aggressive nest intrusions by male Humboldt Penguins

Article Abstract:

Research is presented concerning the influence which aggressive nest intrusions by adult male Humboldt Penguins has on breeding failure within the colony. An 11.1% breeding failure rate due to nest intrusions is discussed.

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Characteristics of predators and offspring influence nest defense by Arctic and Common Terns

Article Abstract:

Research is presented concerning the defense of nests by Arctic and Common Terns from predatory Herring and Great Black-backed Gulls. Attacks on eggs and nestlings on Country Island, Nova Scotia, Canada, were monitored.

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