@article{article, title  = {{Temporal variation in fitness payoffs promotes cooperative breeding in long-tailed tits Aegithalos caudatus.}},

 url = {{}},

 year = {{2002}},

 month = {{8}},

 author = {{MacColl ADC and Hatchwell BJ}},

 doi = {{10.1086/341013}},

 volume = {{160}},

 journal = {{Am Nat}},

 issue = {{2}},

 pages = {{186-194}},

 note = {{Accessed on 2024/12/22}}}