TY - JOUR T1 - Variation in helper effort among cooperatively breeding bird species is consistent with Hamilton's Rule. JO - Nature Communications UR - https://eprints.whiterose.ac.uk/id/eprint/104221 UR - http://dx.doi.org/10.1038/ncomms12663 PY - 2016/08/24 AU - Green JP AU - Freckleton RP AU - Hatchwell BJ ED - DO - DOI: 10.1038/ncomms12663 PB - Nature Publishing Group VL - 7 SP - 12663 Y2 - 2025/11/23 ER -