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.

Effective waterfowl management relies on the collection of relevant demographic data to inform land management decisions; however, some types of data are difficult to obtain. For waterfowl, brood surveys are difficult to conduct because wetland habitats often obscure ducklings from being visually assessed. Here, we used Unoccupied Aerial Systems (UAS) to assess what wetland habitat characteristics influenced brood abundance in Suisun Marsh, California, USA. Using a thermal imaging camera, we surveyed 17 wetland units encompassing 332 ha of flooded area on seven waterfowl hunting clubs during the waterfowl breeding season. Additionally, using a combination of multispectral imagery collected from the UAS flights and LiDAR data from the previous year, we mapped habitat composition within each unit to relate to brood observation counts. From June 3-7, 2019, we identified 113 individual broods comprised of 827 ducklings. We found a positive relationship between the number of broods observed and the proportion of the unit that was flooded. We also found a positive relationship between the number of broods observed and the area of effective habitat, a metric of flooded habitat within a specific distance to flooded vegetation. Brood surveys using UAS could compliment the traditional Breeding Population Survey and provide local managers with fine scale and timely information regarding shifts in brood abundance in the region.