Data from the 'Life history traits of birds, and population responses to global change: the case of tits' Observing Task, part of the Population ecology observatory (ECOPOP) Observation Service of the Montpellier Research Observatory of Environment (OSU OREME, oreme.org). These data are labelled ‘Long-term monitoring in ecology and evolution’ (SEE-Life CNRS label: https://www.inee.cnrs.fr/sites/institut_inee/files/download-file/SEE-Life_Livret_BD.pdf).

Data from the 'Population ecology observatory' (ECOPOP): Individual monitoring of wild animals: physical, biological, social environment, genetic, physiological, immunological, behavioral data.. This observatory is part of the Montpellier Research Observatory of Environment (OSU OREME, oreme.org). It consists in different observing tasks: African ungulates ; Albatross ; Arctic marine ecosystems ; Black-headed Gull ; Black-legged Kittiwake ; Cape gannets ; Contact areas between striated mouse species ; Dynamics of Camargue vertebrate populations ; Ecology and sociality in chacma baboons ; Griffon Vultures ; Kestrel falcon ; Larus michahellis Yellow-legged Gull ; Mandrillus project ; Northern gannets ; Scopoli's Shearwater ; Sociable weavers ; Tits.