@article{article, title  = {{Variation in helper effort among cooperatively breeding bird species is consistent with Hamilton’s Rule}},

 publisher = {{Nature Publishing Group}},

 url = {{}},

 year = {{2016}},

 month = {{8}},

 author = {{Green JP and Freckleton RP and Hatchwell BJ}},

 doi = {{10.1038/ncomms12663}},

 volume = {{7}},

 journal = {{Nature Communications}},

 issue = {{-}},

 pages = {{---}},

 note = {{Accessed on 2025/12/07}}}