Sexual Size Dimorphism and Sibling Competition: Implications for Avian Sex Ratios

The blue-footed booby's (Sula nebouxii) first-hatched chick aggressively dominates and outgrows its sib and sometimes kills it when food is in short supply. Differential male mortality is expected since females grow to be 27% heavier than males and should have an advantage in sibling competitio...

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Veröffentlicht in:	The American naturalist 1991-09, Vol.138 (3), p.623-641
Hauptverfasser:	Drummond, Hugh, Osorno, Jose Luis, Torres, Roxana, Chavelas, Cecilia Garcia, Larios, Horacio Merchant
Format:	Artikel
Sprache:	eng
Schlagworte:	Bird nesting Chicks Ecological competition Female animals Hatching Male animals Mortality Sex ratio Siblings Sula nebouxii Ulna
Online-Zugang:	Volltext
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