Hole-breeding passerines monitoring: Vlieland
Vlieland is one of four areas in NIOO-AnE's long-term monitoring research on great tits and other bird species that started in 1955. It consists of several smaller forest areas, which together cover about 250 ha of mainly conifers and oak on poor sandy soil. Because of Vlieland's isolation being an island in the Wadden Sea, and the variety of smaller-sized forests, important population questions in NIOO's long term research are/were studied here. Most breeding seasons, two fieldworkers, one or more student(s) and sometimes a researcher are involved in doing field work.
Species groups studied
Bird species studied since 1955 are hole-breeders: mainly great tit and blue tit.
Running period (guaranteed funding)
1955 - undetermined
Equipment / facilities
All detailed data from breeding season and winter period roost checks is entered in the ‘Avian database' (BAS) at NIOO-AnE. It consists of broods, individuals, captures, all kinds of biometry data, blood samples and other samples, bill size photographs, etc. It also contains also data on blue tits.
- Hole-breeders (1955 – undetermined)
Conditions for access
The forest areas and large parts of the island of Vlieland are property of the State Forestry Service. For more details, please contact Judith Risse.