Hogstad O. Social behaviour in the non-breeding season in Great Tits Parus major and Willow Tits Poecile montanus: differences in juvenile birds’ route to territorial ownership, and pair-bond stability and mate protection in adults. Ornis Norv. [Internet]. 2015 May 21 [cited 2024 Apr. 26];38:1-8. Available from: https://boap.uib.no/index.php/ornis/article/view/800