H latching asynchrony (HA) is the timespan (up to sev-eral days) across which a# clutch
hatches. from the hatching of the first egg to the emergence of the last chick. Because chicks …

In most animals, offspring from a reproductive bout usually hatch, emerge, or are born within
a relatively short time of each other compared to the time required for their development …

Bird parents may choose among various breeding strategies. From an evolutionary point of
view the outcome of their choice is believed to provide the highest reproductive success in a …

The fitness–related consequences of egg mass, independent of confounding influences
associated with parental quality, remain poorly understood for wild birds in general and for …

A number of hypotheses for hatching asynchrony suggest that the size hierarchy among
nestlings produced by hatching asynchrony is adaptive and confers benefits to parents. We …

1. We studied the significance of hatching asynchrony in blue tits Parus caeruleus during a 4-
year period at Oslo, Norway, by comparing breeding success of broods manipulated to …

Clutches of altricial birds generally hatch over a period of hours or days. Numerous
hypotheses have been generated to explain hatching asynchrony, but most experiments …

In biparental species, conflict between the sexes is expected when optimal levels of parental
care differ between males and females. We studied food provisioning in house wrens …

Previous studies have shown that asynchronous hatching in birds tends to result in fewer,
but higher quality, offspring than does synchronous hatching. However, very few studies …

Trade—offs are central to life history theory, yet few studies have examined how geographic
variation in trade—offs can lead to geographic variation in life history characters. I examined …