Occupancy of breeding sites in the non-breeding season, site quality and breeding success data for a population of common guillemots (Uria aalge) on the Isle of May, Scotland, 2017-2020 ...

• Main Authors: Bennett, S., Harris, M., Wanless, S., Green, J.A., Newell, M.A., Searle, K.R., Daunt, F.
• Format: Dataset
• Language: English
• Published: NERC EDS Environmental Information Data Centre 2022
• Subjects: Isle of May; common guillemot; Uria aalge; site quality; breeding success; site defence; site occupancy; non-breeding; behaviour; uria
• Online Access: https://dx.doi.org/10.5285/40d28d0b-f93d-4c6c-90ef-97a26a510f81; https://catalogue.ceh.ac.uk/id/40d28d0b-f93d-4c6c-90ef-97a26a510f81

This dataset contains information on the occupancy of breeding sites in the non-breeding season, breeding timing and success, and breeding site quality for a sample of common guillemots breeding on the Isle of May, Scotland. Data is available for all attributes for the non-breeding season of 2017/18, 2018/19 and 2019/20. These data are part of the Isle of May long-term study to assess population trends of seabirds under environmental change (IMLOTS). ... : All data derives from time-lapse photography and in-person field observations of common guillemots on the Isle of May by experienced observers from the UK Centre for Ecology & Hydrology. Time-lapse photography data was used to derive non-breeding site occupancy metrics in two study sub-colonies. Breeding success and site quality data were derived from in-person observations at these same sub-colonies. All data were proofed before entering the full dataset and processed as per the accompanying metadata and supporting information. ...