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 …

Across North America, tree swallows have advanced their mean date of clutch initiation (lay
date) by≈ 9 days over the past 30 years, apparently in response to climate change. In a …

The seasonal decline in clutch size has been explained as being due to either:(1) a
constraining effect of female condition on both laying date and clutch size; or (2) a seasonal …

We examined 10 characteristics of natural cavities and their influence on reproductive
success of Tree Swallows (Tachycineta bicolor) nesting in dead trees in beaver ponds …

Glucocorticoid hormones are important regulators of metabolic processes, and of the
behavioral and physiological responses to stressors. Within-population variation in …

Unpredictable, short‐term changes in environmental conditions associated with weather
patterns have severe impacts on the reproductive success of Tree Swallows Tachycineta …

Many avian species initiate incubation before clutch completion, which causes eggs to hatch
asynchronously. This influences brood competitive dynamics and often results in nestling …

1. Life-history decisions are strongly affected by environmental conditions. In birds,
incubation is energetically expensive and affected significantly by ambient temperature. We …

Summary 1 We describe age‐related reproductive performance and recapture rates of tree
swallows (Tachycineta bicolor Vieillot) based on a 25‐year study of a nestbox population in …

We tested experimentally the effects of exposure to high ambient temperatures, for periods
of 1–9 days, on the viability of eggs of the green‐rumped parrotlet. 2. The hatchability of 534 …