@article{article, title  = {{Helpers increase long-term but not short-term productivity in cooperatively breeding long-tailed tits}},

 url = {{}},

 year = {{2004}},

 month = {{1}},

 author = {{Hatchwell BJ and Russell AF and MacColl ADC and Ross DJ and Fowlie MK and McGowan A}},

 doi = {{10.1093/beheco/arg091}},

 volume = {{15}},

 journal = {{BEHAV ECOL}},

 issue = {{1}},

 pages = {{1-10}},

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