TY - JOUR T1 - HERITABILITY OF PARENTAL EFFORT IN A PASSERINE BIRD JO - Evolution UR - https://doi.org/10.1554/02-685 PY - 2003/06/28 AU - MacColl ADC AU - Hatchwell BJ ED - DO - DOI: 10.1554/02-685 PB - The Society for the Study of Evolution VL - 57 IS - 9 SP - 2191 EP - 2191 Y2 - 2025/12/07 ER -