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May 29, 2026Canadian Journal of Zoology

Causes and consequences of incubation patterns in female Savannah sparrows (Passerculus sandwichensis)

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Authors

ONOscar K. NigamSMSarah D. MuellerPJPatricia Jones

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Overview

Randomized trial examines how weather affects incubation behavior in female Savannah sparrows, suggesting complex tradeoffs in parental investment.

Key Points

  • The aim is to understand how female Savannah sparrows adjust their incubation strategies in response to various environmental conditions.
  • Examined incubation behavior metrics (off-bout duration, off-bout frequency, and nest attentiveness) in response to environmental variables.
  • Analyzed the impact of temperature and precipitation on incubation behavior among Savannah sparrows of different ages.
  • Females incubated longer in colder and wetter conditions; shorter off-bouts in cold but longer ones in heavy rain.
  • Older females took shorter off-bouts in inclement weather compared to younger females.
  • Increased incubation time correlated with heavier nestlings.

Cite This Study

Nigam et al. (2026) studied this question.

synapsesocial.com/papers/6a192f88fab5b468c4418bfdhttps://doi.org/10.1139/cjz-2025-0162
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Also Consider

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  1. 1Extended incubation recesses in sanderlings are impacted by temperature and body condition2024 · 3 citations
  2. 2Ecological and Life‐History Correlates of Incubation Attentiveness Differ Between Female‐Only and Biparentally Incubating Passerine Birds2026
  3. 3Ambient temperature, clutch size, and daylight are the main drivers of incubation behavior in two neotropical swallows breeding 8,000 km apart2025
  4. 4Incubation behaviour in a double‐nesting alpine bird <i>Alectoris graeca saxatilis</i>: similar nest attendance by males and females2025
  5. 5Thermal variation and mean temperature independently affect breeding behavior across temporal scales in two cavity nesting birds2026