Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 10 of 10 for “"Flight initiation distance"”.
-
How air temperature affects flight initiation distance in arid-zone birds
… arid-zone birds' response to predators. The flight initiation distances (FID), i.e. the distance from a predator when the prey initiates escape, of eight bird species in the Kalahari were measured over a range of air temperatures during October and November 2015. The results from this study …
-
Influences of Anthropogenic Noise on Flight Initiation Distance, Foraging Behavior, and Feeder Community Structure of Wild Birds
… first component of this thesis, I assessed the distance at which a bird initiates flight or escape behavior (i.e., flight initiation distance or FID) in varying acoustic conditions. I surveyed 12 songbird species from three foraging guilds, ground foragers, canopy gleaners, and hawking …
-
The Ontogeny of Escape Responses and Locomotor Performance in Sceloporus Woodi
… a predator. The most common secondary defense is flight. Flight initiation distance describes the distance between a prey item and a predator where the benefits of fleeing outweigh the benefits of remaining stationary. There are many factors that influence flight initiation distance including …
-
Behavioral differences in urban Sciurus carolinensis with varying human exposure as a model for synanthropic human-animal relationships
… range from two different perspectives by using flight initiation distance and feeding surveys. Flight initiation distance (FID) measures the distance at which S. carolinensis begins to flee from an approaching predator or threat and helps us better understand how prey organisms measure threats …
-
Effects of Trout Introduction on Community Assemblage and Behavior of Native Fish in the Missouri Ozarks
… that trout introduction had an effect on the flight initiation distance, a proxy of wariness, of rainbow darters, Etheostoma caeruleum, and orange throat darters, Etheostoma spectabile. The increased wariness observed in these species in trout streams could have long-term fitness consequences …
-
Hydrodynamic controls on the movement of invertebrate larvae and organic matter in small streams
… a range of flow conditions showed that retreat distance was more sensitive than flight initiation distance to variation in water velocity, suggesting that hydrodynamics mediate the risks of predation and the costs of flight in stream systems. Comparisons of the transport distances of live …
-
Effects of Urbanization on Survival Rates, Anti-Predator Behavior, and Movements of Woodchucks (Marmota Monax)
… behavior—levels of vigilance, foraging distance from burrows, and flight initiation distance—did not vary with urbanization. Julian date was related to all components of anti-predator behavior in a consistent manner, which indicates woodchucks take on more risk later in the active season …
-
Social structure, individual fitness and the effect of climate in an obligate cooperatively breeding bird, the white-winged chough (Corcorax melanorhamphos)
… breed -suburbs versus woodland. I found that flight initiation distance (FID) was an effective method to measure boldness in the wild in choughs. I also found that personality is more variable among groups than within groups; and that individuals breeding in the suburbs are bolder than those …
-
Social structure, individual fitness and the effect of climate in an obligate cooperatively breeding bird, the white-winged chough (Corcorax melanorhamphos)
… breed -suburbs versus woodland. I found that flight initiation distance (FID) was an effective method to measure boldness in the wild in choughs. I also found that personality is more variable among groups than within groups; and that individuals breeding in the suburbs are bolder than those …
-
Variation drives response to urbanisation: Evolutionary ecology of two introduced birds within anthropogenic environments : A thesis submitted in partial fulfilment of the requirements for the Degree of Doctor of Philosophy at Lincoln University
… using more aggressive behaviour, increased flight duration around a speaker (rather than a signalling response), and decreased duration of singing over the speaker compared to the peri-urban river and rural individuals. The probability of responding with signalling behaviours toward …