TY - JOUR T1 - UNUSUAL SPERM MORPHOLOGY IN THE EURASIAN BULLFINCH (PYRRHULA PYRRHULA) JO - The Auk PY - 2006/04/01 AU - Birkhead TR AU - Immler S AU - Pellatt EJ AU - Freckleton R ED - DO - DOI: 10.1642/0004-8038(2006)123[383:usmite]2.0.co;2 PB - Oxford University Press (OUP) VL - 123 IS - 2 SP - 383 EP - 383 Y2 - 2025/05/19 ER -