TY - JOUR T1 - The Shapes of Birds鈥� Eggs: Evolutionary Constraints and Adaptations JO - The American Naturalist PY - 2021/12/01 AU - Montgomerie R AU - Hemmings N AU - Thompson JE AU - Birkhead TR ED - DO - DOI: 10.1086/716928 PB - University of Chicago Press VL - 198 IS - 6 SP - E215 EP - E231 Y2 - 2025/07/27 ER -