Surveys are conducted to record the number of waterfowl utilizing the Yolo Bypass Wildlife Area. Data are broken up by species and pond number where individuals are counted. This data and metadata were submitted by California Department of Fish and Wildlife (CDFW) Staff though the Data Management Plan (DMP) framework with the id: DMP000577. For more information, please visit https://wildlife.ca.gov/Data/Sci-Data.

Surveys are conducted to record the number of waterfowl utilizing the Yolo Bypass Wildlife Area. Data are broken up by species and pond number where individuals are counted. This data and metadata were submitted by California Department of Fish and Wildlife (CDFW) Staff though the Data Management Plan (DMP) framework with the id: DMP000577. For more information, please visit https://wildlife.ca.gov/Data/Sci-Data.

Surveys are conducted to record the number of waterfowl utilizing the Yolo Bypass Wildlife Area. Data are broken up by species and pond number where individuals are counted. This data and metadata were submitted by California Department of Fish and Wildlife (CDFW) Staff though the Data Management Plan (DMP) framework with the id: DMP000577. For more information, please visit https://wildlife.ca.gov/Data/Sci-Data.

These surveys are completely incidental and are conducted as staff at the YBWA conduct regular daily activities. While on the Wildlife Area, staff record each brood of waterfowl or ring-necked pheasant that they observe. Data are used as indexes to assess trends in chick survival and recruitment. Date inlcudes the date, time, location, species, estimated age, and number of individual chicks observed in a brood. This data and metadata were submitted by California Department of Fish and Wildlife (CDFW) Staff though the Data Management Plan (DMP) framework with the id: DMP000578. For more information, please visit https://wildlife.ca.gov/Data/Sci-Data.

The data included the number of pheasant crows heard at 28 fixed survey points within the Yolo Bypass WA. When conditions allow, surveys are conducted twice a month, between the last week of March and the end of May. Surveys start 45 minutes before sunrise and two minutes are spent listening at each survey point. This data and metadata were submitted by California Department of Fish and Wildlife (CDFW) Staff though the Data Management Plan (DMP) framework with the id: DMP000576. For more information, please visit https://wildlife.ca.gov/Data/Sci-Data.

The data included the number of pheasant crows heard at 28 fixed survey points within the Yolo Bypass WA. When conditions allow, surveys are conducted twice a month, between the last week of March and the end of May. Surveys start 45 minutes before sunrise and two minutes are spent listening at each survey point. This data and metadata were submitted by California Department of Fish and Wildlife (CDFW) Staff though the Data Management Plan (DMP) framework with the id: DMP000576. For more information, please visit https://wildlife.ca.gov/Data/Sci-Data.

To fulfill monitoring requirements as part of a Prop 1 habitat restoration project, avian surveys are conducted twice during the winter months. These point counts are conducted at 26 fixed survey points and include all observations of birds at those locations. Data includes the total number of individual birds observed at 26 fixed survey locations throughout the northern half of the YBWA. This data and metadata were submitted by California Department of Fish and Wildlife (CDFW) Staff though the Data Management Plan (DMP) framework with the id: DMP000579. For more information, please visit https://wildlife.ca.gov/Data/Sci-Data.

Data Descriptions Plant species and their relative cover are recorded once per year at 19 plots throughout the YBWA. Photos are also taken at each plot - 1 of the plot itself, followed by one facing each cardinal direction This data and metadata were submitted by California Department of Fish and Wildlife (CDFW) Staff though the Data Management Plan (DMP) framework with the id: DMP000580. For more information, please visit https://wildlife.ca.gov/Data/Sci-Data.

Data Descriptions Plant species and their relative cover are recorded once per year at 19 plots throughout the YBWA. Photos are also taken at each plot - 1 of the plot itself, followed by one facing each cardinal direction This data and metadata were submitted by California Department of Fish and Wildlife (CDFW) Staff though the Data Management Plan (DMP) framework with the id: DMP000580. For more information, please visit https://wildlife.ca.gov/Data/Sci-Data.

Long-term environmental management to prevent waterfowl population declines is informed by ecology, movement behavior and habitat use patterns. Extrinsic factors such as human-induced disturbance can cause behavioral changes which may influence movement, and resource needs, driving variation that affects management efficacy. To better understand the relationship between human-based disturbance and animal movement and habitat use, and their potential effects on management, we GPS tracked 15 dabbling ducks in California over about 4-weeks before, during and after the start of a recreational hunting season in October and November 2018. We recorded locations at 2-minute intervals across three separate 24-hour tracking phases: Phase 1) two weeks before the start of the hunting season (control (undisturbed) movement); Phase 2) the hunting season opening weekend; and Phase 3) a hunting weekend two weeks after opening weekend. We used GLMM models to analyze variation in movement and habitat use under hunting pressure compared with normal observed patterns prior to commencement of hunting. We also compared responses to differing levels of disturbance related to the time of day high - lethal); moderate - non-lethal (crepuscular); and low - night). During opening weekend flight (percent time and distance) more than doubled during moderate and low disturbance and increased by 50 percent during high disturbance compared with the pre-season weekend. Sanctuary use tripled during moderate and low disturbance and increased 50 percent during high disturbance. Two weeks later flight decreased in all disturbance levels but was only less than the pre-season levels during high disturbance. In contrast, sanctuary use only decreased at night while daytime doubled from 45 percent to greater than 80 percent, although not to pre-season levels. Birds adjust rapidly to disturbance and nocturnal foraging compensates energy deficits. These results have implications for energetics models that estimate population food requirements and management may benefit from reassessing the juxtaposition of habitat to optimize wetland management for waterfowl.