Patterns of intra-clutch egg size variation and intra-clutch hatch intervals in the Ring-billed gull (Larus delawarensis) were documented during the peak nesting period of two consecutive breeding seasons, at a colony near Port Colborne, Ontario. Egg size decreased with laying order; third laid eggs were significantly smaller than first laid eggs. Hatching of the third egg was delayed from that of first and second eggs. Intraclutch egg size differences established initial size disparities among chicks at hatch. Hatch intervals further exaggerated size disparities during the early post brood completion period. Competitive asymmetries among chicks were associated with increased mortality rates among third hatched chicks despite the ...
In sexually size dimorphic species, individuals of the larger sex often suffer from enhanced mortali...
When reproductive success is constant in one breeding phase, different tactics that increase variati...
This study aimed to test the hypothesis that clutch size covaries with egg volume and hatching succe...
Intraclutch egg size variation may non-adaptively result from nutritional/energetic constraints acti...
Lack (1947) proposed that, in nidicolous birds, clutch-size has evolved to correspond, on average, t...
Measurements of costs of reproduction are essential for our understanding of the evolution of reprod...
The reproductive biology of the Ring-billed Gull (Larus delawarensis) was studied on Gull Island, P...
In many bird species that practice parental care, siblings often compete for resources and care prov...
The general objective of my study was to monitor proximate causes and seasonal patterns of hatching...
Reproductive performance of Ring-billed Gulls (Larus delawarensis) in relation to nest location was ...
In sexually size dimorphic species, individuals of the larger sex often suffer from enhanced mortali...
Includes bibliographical references.Includes illustrations and maps.The effects of nest location and...
The thesis addresses some aspects of the breeding biology of Dominican Gulls (Larus dominicanus) in ...
In sexually size dimorphic species, individuals of the larger sex often suffer from enhanced mortali...
In response to unpredictability of both food availability and core offspring failure, parents of man...
In sexually size dimorphic species, individuals of the larger sex often suffer from enhanced mortali...
When reproductive success is constant in one breeding phase, different tactics that increase variati...
This study aimed to test the hypothesis that clutch size covaries with egg volume and hatching succe...
Intraclutch egg size variation may non-adaptively result from nutritional/energetic constraints acti...
Lack (1947) proposed that, in nidicolous birds, clutch-size has evolved to correspond, on average, t...
Measurements of costs of reproduction are essential for our understanding of the evolution of reprod...
The reproductive biology of the Ring-billed Gull (Larus delawarensis) was studied on Gull Island, P...
In many bird species that practice parental care, siblings often compete for resources and care prov...
The general objective of my study was to monitor proximate causes and seasonal patterns of hatching...
Reproductive performance of Ring-billed Gulls (Larus delawarensis) in relation to nest location was ...
In sexually size dimorphic species, individuals of the larger sex often suffer from enhanced mortali...
Includes bibliographical references.Includes illustrations and maps.The effects of nest location and...
The thesis addresses some aspects of the breeding biology of Dominican Gulls (Larus dominicanus) in ...
In sexually size dimorphic species, individuals of the larger sex often suffer from enhanced mortali...
In response to unpredictability of both food availability and core offspring failure, parents of man...
In sexually size dimorphic species, individuals of the larger sex often suffer from enhanced mortali...
When reproductive success is constant in one breeding phase, different tactics that increase variati...
This study aimed to test the hypothesis that clutch size covaries with egg volume and hatching succe...