• Publications
  • Influence
How Selfish Should Stronger Sibs Be?
We develop a series of models to investigate how selfish stronger progeny should be toward their weaker (full-sib) nest mates. The first represents a sibling hierarchy in which the strongest sib canExpand
  • 166
  • 13
Proximate and Ultimate Roles of Food Amount in Regulating Egret Sibling Aggression.
In facultatively siblicidal bird species, the amount of food delivered by parent birds to their young ("food amount") has been assumed to be both an important proximate and ultimate cause of fatalExpand
  • 97
  • 7
The Role of Brood Size in Regulating Egret Sibling Aggression
In siblicidal birds, overt aggression is used by nestlings to resolve competition for food, and the nestlings of most species diminish or abate their combat when that competition is relaxed. PreviousExpand
  • 45
  • 4
Flexibility in the development of heron sibling aggression: an intraspecific test of the prey-size hypothesis
Abstract Sibling aggression in nestling Arceidae has been associated with a diet of monopolizably small prey items: in a Texas colony two egret species that eat small prey are siblicidal, whileExpand
  • 32
  • 3
Species differences in male parental care in birds : A reexamination of correlates with paternity
Avian species differ markedly in the extent to which males contribute to pre- hatching and posthatching parental care. In a recent comparative study, Moller and Birkhead (1993) concluded thatExpand
  • 67
  • 2
  • Open Access
Territorial aggression, timing of egg loss, and egg-size differences in rockhopper penguins, Eudyptes c. chrysocome, on New Island, Falkland Islands
Crested penguins, Eudyptes spp., lay two eggs of vastly different sizes and regularly raise only one offspring per breeding attempt. First-laid (A-) eggs are substantially smaller than second-laidExpand
  • 21
  • 1
Insurance, Developmental Accidents, and the Risks of Putting all Your Eggs in One Basket
Abstract Parents may hedge against developmental accidents, the premature and unforeseen failure of dependent offspring, by adding supernumeraries to the clutch or brood. The success of such anExpand
  • 25
  • 1
Effects of sibling contact on hatch timing in an asynchronously hatching bird
Abstract Previous laboratory studies have shown that embryonic acoustic cues enable some precocial birds to effect tight within-brood hatching synchrony. Embryos of these species therefore can exertExpand
  • 29