Hair cortisol concentration reflects the life cycle and management of grey wolves across four European populations
This work was supported by Fundação para a Ciência e Tecnologia [grants SFRH/BPD/116596/2016 to N.S. and SFRH/BD/144087/2019 to M.N.], the Slovenian Research Agency [grant P4-0059 to M.K.] and the Spanish Ministry of Economy, Industry, and Competitiveness [Ramon & Cajal research contract (RYC-2015-18932) to J.V.L.B.]. The fieldwork in Portuga was funded by Empreendimentos Eólicos do Vale do Minho S.A. and ACHLI.