6ed7623d-c133-414b-b31a-f1a56ceed59d English series series 2026-02-13T13:54:06 MEDIN 3.1.2 biota Bird counts SeaDataNet Parameter Discovery Vocabulary 2023-12-12 revision Bird behaviour SeaDataNet Parameter Discovery Vocabulary 2023-12-12 revision Species distribution GEMET - INSPIRE themes, version 1.0 2009-07-31 revision SeaVoX Vertical Co-ordinate Coverages 2020-05-21 revision atmosphere 2025-06-24T23:00:00 2025-12-24T00:00:00 -5 -3 54 55 TCE-4464 Marine Data Exchange 2025, North West Wildlife Trust, Marine Internships, Kittiwake Nesting in Irish Sea 2026-02-13T13:54:06 publication English Here we report the monitoring of Black-legged Kittiwake (Rissa tridactyla) on offshore wind farm (OWF) infrastructure in the Irish Sea off the Cumbrian coast. The monitoring of the Walney 1 & 2 offshore substations (OSS) continued into its third year, including a trial deployment of timelapse cameras. We also report the first census of breeding kittiwakes on turbine jackets at the Ormonde OWF. The 2025 counts at Walney 1 & 2 OSSs were similar to previous years, indicating a superficially stable population and potentially indicative of well-established colonies with reduced growth. The trial of timelapse cameras indicated their suitability for future monitoring on the substations and provided data on nest phenology, potentially confirming anecdotal evidence that offshore breeding is delayed. The census of Ormonde found 15 apparently occupied nests (AON) restricted to a single turbine jacket but with adult kittiwakes roosting throughout the wind farm. However, survey limitations prevented productivity estimates; continued monitoring of the kittiwake population within the arrays at Walney and Ormonde will further improve our understanding of the colonies. The following report was produced as part of the Marine Futures Internship; a collaborative project between Natural England, Ørsted, The Crown Estate and the North West Wildlife Trusts, which is funded by The Crown Estate and managed by Cumbria Wildlife Trust. The Deliverables must be used in accordance with the Marine Data Exchange's Terms of Use otherRestrictions The Deliverables must be used in accordance with the Marine Data Exchange's Terms of Use otherRestrictions The Crown Estate +44 020 7851 5000 enquiries@thecrownestate.co.uk custodian Cumbria Wildlife Trust BethC@cumbriawildlifetrust.org.uk originator The Crown Estate +44 020 7851 5000 enquiries@thecrownestate.co.uk distributor Cumbria Wildlife Trust BethC@cumbriawildlifetrust.org.uk owner notPlanned Documents https://www.marinedataexchange.co.uk/details/TCE-4464/summary A link to the web service or dataset. https://www.marinedataexchange.co.uk A link to the general host site. Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services 2010-12-08T00:00:00 publication False series Original sources, collected by Abi O'Leary and Alex Wright (authors), and Orsted and Natural England volunteers/employees (Bart Donato, and Harry Cale) between 06/06/25 - 20/08/25. Permission to collect granted by Orsted and the OFTO. Accuracy - known errors - some blurry photos caused by different people collecting data. These were included in the AON count as this was still accurate. Complete data set, consistent values, and recent data. Limitations caused by weather - delayed survey dates. software - dotdotgoose used to count birds and nests. Cumbria Wildlife Trust BethC@cumbriawildlifetrust.org.uk pointOfContact EPSG Geodetic Parameter Registry 2022-11-29 revision WGS 84