scholarly journals Effects of simulated aircraft noise on hearing, food detection, and predator avoidance behavior of the kit fox, Vulpes marotis

1993 ◽  
Vol 93 (4) ◽  
pp. 2378-2378 ◽  
Author(s):  
Ann E. Bowles ◽  
Jon K. Francine
Keyword(s):  
Avoidance Behavior ◽  
Predator Avoidance ◽  
Aircraft Noise ◽  
Kit Fox ◽  
Food Detection

scholarly journals Fat Affects Predator-Avoidance Behavior in Gray Catbirds (Dumetella Carolinensis) During Migratory Stopover

The Auk ◽  
2006 ◽  
Vol 123 (4) ◽  
pp. 1069-1076 ◽  
Author(s):  
David A. Cimprich ◽  
Frank R. Moore
Keyword(s):  
Avoidance Behavior ◽  
Predator Avoidance ◽  
Subcutaneous Fat ◽  
Flight Performance ◽  
Long Distance ◽  
Fat Reserves ◽  
Dumetella Carolinensis ◽  
Model Treatment ◽  
Migrant Birds ◽  
Migratory Stopover

Abstract During migration, birds may store large quantities of fat to fuel long-distance flight. Because mass affects flight performance, fat migrants should behave with greater caution toward aerial predators than lean migrants. We tested a prediction of this hypothesis, namely, that fat birds will remain motionless longer than lean birds after a simulated encounter with a raptor. We captured Gray Catbirds (Dumetella carolinensis) during fall migration, classified their subcutaneous fat, exposed them to a model hawk, and then recorded the time until their first perch change. To determine whether the birds treated the simulated predator as a threat, we also tested them with a hexagon-shaped model and with no model. The birds remained motionless longer with the hawk model than either of the two other treatments. Fat birds remained motionless longer than lean birds when exposed to the hawk model, but we detected no difference with the other two treatments. These results provide evidence that fat affects the predator-avoidance behavior of Gray Catbirds during migratory stopover. That a difference between fat and lean groups was only apparent with the hawk model treatment suggests that the result is attributable to differences in the flight performance of the two groups rather than simply a difference in motivation to begin foraging. We suggest that fat should influence the behavior of a wide variety of migrant birds, particularly those species that typically carry greater fat reserves or that forage in more exposed situations than the Gray Catbirds we tested. La Grasa Afecta el Comportamiento de Evasión de Depredadores en Dumetella carolinensis durante las Paradas Migratorias

Northern bobwhite predator avoidance behavior in response to varying types of threat

2014 ◽  
Vol 78 (7) ◽  
pp. 1272-1281 ◽  
Author(s):  
Rebecca Perkins ◽  
Clint Boal ◽  
Dale Rollins ◽  
Robert M. Perez
Keyword(s):  
Avoidance Behavior ◽  
Predator Avoidance ◽  
Northern Bobwhite

Nocturnal Inshore Movement of the Mimic Shiner (Notropis volucellus): a Possible Predator Avoidance Behavior

1983 ◽  
Vol 40 (7) ◽  
pp. 888-894 ◽  
Author(s):  
David A. Hanych ◽  
Michael R. Ross ◽  
Robert E. Magnien ◽  
Amy L. Suggars
Keyword(s):  
Relative Abundance ◽  
Avoidance Behavior ◽  
Predator Avoidance ◽  
Behavioral Plasticity ◽  
Distribution Patterns ◽  
Predation Pressure ◽  
Habitat Characteristics ◽  
Nearshore Area ◽  
Notropis Volucellus ◽  
Feeding Habitat

Diel seining documented a significant summer nocturnal inshore movement of the mimic shiner (Notropis volucellus) in Lake Itasca, Minnesota. This species initiated inshore movement at sunset, occupied the nearshore area throughout the night, and moved offshore by sunrise. Mimic shiners were collected in less than 1 m of water throughout inshore areas with sparsely developed macroscopic vegetation. Greatest relative abundance was observed at sites possessing the greatest expanse of sparsely or nonvegetated substrate. Relative abundance at inshore sites may be related to habitat characteristics of the sites or to the proximity of feeding habitat. These diel movements differed markedly from those exhibited by the mimic shiner in other lakes. The inshore movement in Lake Itasca may function to reduce crepuscular and nocturnal predation pressure. Our data support the hypothesis that freshwater fishes may possess behavioral plasticity sufficient to alter movement and distribution patterns according to prevailing conditions and that predation pressure may be important in altering prey behavioral patterns.

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