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Prey flight behaviors in response to wading bird disturbances and their influence on foraging strategy of Great Blue Herons (Ardea herodias)

Typescript.
Includes vita and abstract.
Bibliography: Includes bibliographical references (leaves 89-91). / A geometric model using idealized prey behaviors in
reaction to wading bird disturbances was developed to
hypothesize how wading bird foraging strategy might most
efficiently counter those behaviors. The model suggests that
for prey responding to wading bird disturbances with flight
response distance strongly negatively correlated to their
distance from the point of disturbance, wading birds could
employ disturbance facilitated social foraging strategy,
thereby increasing individual foraging efficiency and
selecting for social foraging.
In controlled studies of the reactive behaviors of two
primary prey species seen to be taken at disparate rates by
solitary and socially foraging herons, schooling Shiner
Surfperch exhibited behaviors favoring social foraging in
herons, while Staghorn Sculpins exhibited no correlation in their flight response distances relative to their proximity to
the disturbance, and seemed unlikely to be more efficiently
utilized by socially foraging wading birds.

Identiferoai:union.ndltd.org:uoregon.edu/oai:scholarsbank.uoregon.edu:1794/9891
Date January 1992
CreatorsWarrick, Douglas Robert
PublisherThesis (M.S.)--University of Oregon, 1992.
Source SetsUniversity of Oregon
Languageen_US
Detected LanguageEnglish
TypeThesis

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