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 6 of 6 for “"brood movements"”.
-
Wood Duck Brood Movements, Habitat Use, and Survival Rates on Two Prairie Rivers in South Dakota
… their breeding range throughout South Dakota. Brood ecology may differ from traditional breeding areas, and between areas within South Dakota, due to difference in landscape. Wood duck brood movements, habitat use, and survival were studied by radio-marking hens nesting in boxes on the Big …
-
Movements and Habitats of Brood-Rearing Wood Ducks On A Prairie River
Radio telemetry and brood surveys were used to evaluate wood duck (Aix sponsa) brood habitat and movements along 40 km of the Big Sioux River in eastern South Dakota during 1979-81. Most of the oxbows and nearby wetlands in the study area contained water in 1979-80, but drought dried all but 2 of …
-
Analyses of Greater Sage-Grouse (Centrocercus urophasianus) Translocation Release Methods and Chick Survival in Strawberry Valley, Utah
… enables monitoring of individual chicks and broods during a critical period of their life history. The exact cause of low chick recruitment in Strawberry Valley has not been well understood. In 2006, a chick mortality study using micro-transmitters was initiated to (1) determine the causes of …
-
Brood ecology and population dynamics of King Eiders
… of nest success. To gain insight into King Eider brood ecology I, respectively, monitored 111 and 46 individually-marked ducklings from broods of 23 and 11 radio-marked King Eiders during 2000 and 2001. Total brood loss accounted for 84% of all duckling mortality with most brood loss (77%) less …
-
Piping Plover (Charadrius melodus) demography, behavior, and movement on the Outer Banks of North Carolina
… we examined Piping Plover population dynamics, brood movement, and migration in North Carolina from 2015–2017. We monitored 46 nests and 19 broods, and we used a logistic exposure nest survival model and Cormack-Jolly-Seber model to estimate reproductive success. We uniquely banded 77 adults and …
-
The effects of intensive agriculture on the breeding of the lapwing (Vanellus vanellus L.).
… chicks from smaller eggs. Chicks undertaking movements from natal to rearing fields suffered high levels of mortality. Chick mortality was caused by poor body condition, entrapment in field boundary ditches or predation or from the interaction of these factors. Brood movements were influenced …