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The dataset runs from the breeding season in 1993 to the end of the breeding season in 2014. The first egg dates are presented as the number of days from the start date which was set as the 1st April each year. Because the timing of breeding of great tits and blue tits is influenced in large part by ambient temperature and the phenology of their main prey, the data were collected as a measure of spring phenology. 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Egg dates have been checked against original paper records. Numbers of lines of data have been checked and data values have been checked for outliers. Individual egg date values have been checked against mean values per year for each site.","metadataDate":"2026-05-11T18:19:57","notGEMINI":false,"onlineResources":[{"url":"https://data-package.ceh.ac.uk/sd/2024e114-6a7e-437d-b3a6-4929967eb1aa.zip","name":"Supporting Information","description":"Supporting documents to assist in re-use of this resource.","function":"information","type":"OTHER"}],"pointsOfContact":[{"honorificPrefix":"Dr","familyName":"Hinsley","givenName":"Shelley","organisationName":"UK Centre for Ecology & Hydrology","organisationIdentifier":"https://ror.org/00pggkr55","role":"pointOfContact","email":"enquiries@ceh.ac.uk","address":{"deliveryPoint":"Maclean Building, Benson Lane, Crowmarsh Gifford","city":"Wallingford","administrativeArea":"Oxfordshire ","postalCode":"OX10 8BB","country":"United Kingdom"},"fullName":"Hinsley, S.","pointOfContact":"UK Centre for Ecology & Hydrology"}],"publicationDate":"2015-03-03T00:00:00.000Z","publishers":[{"organisationName":"NERC Environmental Information Data Centre","organisationIdentifier":"https://ror.org/04xw4m193","role":"publisher","email":"info@eidc.ac.uk"}],"resourceIdentifiers":[{"code":"https://catalogue.ceh.ac.uk/id/2024e114-6a7e-437d-b3a6-4929967eb1aa"},{"code":"10.5285/2024e114-6a7e-437d-b3a6-4929967eb1aa","codeSpace":"doi"}],"resourceMaintenance":[{"frequencyOfUpdate":"notPlanned","note":"Dataset is complete from 1993 to 2014."}],"resourceType":{"value":"dataset"},"responsibleParties":[{"honorificPrefix":"Dr","familyName":"Hinsley","givenName":"Shelley","organisationName":"UK Centre for Ecology & Hydrology","organisationIdentifier":"https://ror.org/00pggkr55","role":"pointOfContact","email":"enquiries@ceh.ac.uk","address":{"deliveryPoint":"Maclean Building, Benson Lane, Crowmarsh Gifford","city":"Wallingford","administrativeArea":"Oxfordshire ","postalCode":"OX10 8BB","country":"United Kingdom"},"fullName":"Hinsley, S.","pointOfContact":"UK Centre for Ecology & Hydrology"},{"familyName":"Hinsley","givenName":"S.A.","organisationName":"Centre for Ecology & Hydrology","organisationIdentifier":"https://ror.org/00pggkr55","role":"author","email":"enquiries@ceh.ac.uk","fullName":"Hinsley, S.A."},{"familyName":"Bellamy","givenName":"P.E.","organisationName":"RSPB","role":"author","email":"paul.bellamy@rspb.org.uk ","fullName":"Bellamy, P.E."},{"organisationName":"NERC EDS Environmental Information Data Centre","organisationIdentifier":"https://ror.org/04xw4m193","role":"custodian","email":"info@eidc.ac.uk"},{"organisationName":"NERC Environmental Information Data Centre","organisationIdentifier":"https://ror.org/04xw4m193","role":"publisher","email":"info@eidc.ac.uk"},{"organisationName":"UK Centre for Ecology & Hydrology","organisationIdentifier":"https://ror.org/00pggkr55","role":"rightsHolder","email":"enquiries@ceh.ac.uk"}],"rightsHolders":[{"organisationName":"UK Centre for Ecology & Hydrology","organisationIdentifier":"https://ror.org/00pggkr55","role":"rightsHolder","email":"enquiries@ceh.ac.uk"}],"securityConstraints":["unclassified"],"spatialReferenceSystems":[{"code":"http://www.opengis.net/def/crs/EPSG/0/27700","title":"OSGB 1936 / British National Grid"}],"spatialRepresentationTypes":["textTable"],"temporalExtents":[{"begin":"1993-01-01","end":"2014-12-31"}],"title":"First egg dates for great tits (Parus major) and blue tits (Cyanistes caeruleus) breeding in three deciduous woods in Cambridgeshire, England in 1993 to 2014","topicCategories":[{"value":"biota","uri":"http://inspire.ec.europa.eu/metadata-codelist/TopicCategory/biota"}],"topics":["http://onto.nerc.ac.uk/CEHMD/topic/3"],"type":"dataset","uri":"https://catalogue.ceh.ac.uk/id/2024e114-6a7e-437d-b3a6-4929967eb1aa","useConstraints":[{"value":"This resource is made available under the terms of the Open Government Licence ","code":"license","uri":"https://eidc.ac.uk/licences/ogl/plain"},{"value":"© UK Centre for Ecology & Hydrology","code":"copyright"}]}