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 “"nest attentiveness"”.
-
The Effects of Diet and Predation on Nesting Herring Gulls (Larus argentatus) in Pukaskwa National Park
… gull reproductive success by examining gull nest attentiveness with camera traps. Gulls utilizing anthropogenic food sources exhibited reduced levels of stress-associated hormones, increased egg size, and increased day-time nest attentiveness. Gulls were significantly more attentive to their …
-
Great Blue Heron Nesting Biology and Habitat Use On the James River in South Dakota
Breeding biology, nest site activities, and habitat use of great blue herons (Ardea herodias) nesting in the Glendale heronry, South Dakota, were investigated in 1980 and 1981. Mean brood size was 3.35 nestlings. The predicted number of feeding trips of adult birds peaked when nestlings were 29 …
-
Indirect effects of agricultural intensification on tree swallow (Tachycineta bicolor) foraging behaviour, body condition, and physiology
… stress and feather corticosterone). Artificial nest-boxes were erected at each of 5 sites with varying levels of agricultural intensification in south-central Saskatchewan, 2012-2014. Insect abundance and biomass were monitored daily using passive aerial samplers at each of the sites throughout …
-
Breeding Biology Of Chuck-Will's-Widows: Incubation, Brooding, And Provisioning Behavior And Characteristics Of Nest Sites
… carolinensis) are cryptically colored grounding-nesting nightars that breed throughout much of the eastern United States, primarily in mixed-forest habitat. Because of their cryptic plumage and nocturnal habits, little is known about their behavior, particularly their breeding and nesting …
-
THE ROLES OF FOOD AND PREDATION IN SHAPING ADAPTIVE AND MALADAPTIVE BEHAVIORS IN POSTFIRE BIRD SPECIES
… Next I examine habitat selection behavior and nest success of Olive-sided Flycatchers (Contopus cooperi) in naturally occurring burned forest and in an anthropogenically created habitat type—a selectively harvested forest. I show that Olive-sided Flycatchers preferred to settle in the …
-
THE ROLES OF FOOD AND PREDATION IN SHAPING ADAPTIVE AND MALADAPTIVE BEHAVIORS IN POSTFIRE BIRD SPECIES
… Next I examine habitat selection behavior and nest success of Olive-sided Flycatchers (Contopus cooperi) in naturally occurring burned forest and in an anthropogenically created habitat type—a selectively harvested forest. I show that Olive-sided Flycatchers preferred to settle in the …
-
Going through the motions : the impacts of frequent fires and grazing pressure on reproduction of Montane grassland birds
… as a cause for the decline of many grassland-nesting birds across the globe. While this effect has motivated extensive research and conservation in the developed northern hemisphere, it remains poorly addressed in southern hemisphere. Between 1998 and 2001 I examined the effect of fire …
-
Sex-specific investment in incubation and the reproductive biology of two tropical antbird species
… independent of male and female time spent on the nest. Our results suggest that males may benefit embryo development by minimizing time eggs experience cold temperatures during female absences, and concurrently benefit female physiological condition for future nesting efforts. Lastly, we report …
-
Sex-specific investment in incubation and the reproductive biology of two tropical antbird species
… independent of male and female time spent on the nest. Our results suggest that males may benefit embryo development by minimizing time eggs experience cold temperatures during female absences, and concurrently benefit female physiological condition for future nesting efforts. Lastly, we report …