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Cover image
Cover Image
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Cover: Altricial white-crowned sparrows develop from dependent hatchlings (left: 2 days after hatching) to alert fledglings (right: near fledging) in ∼10 days. These young may face a cost−benefit trade-off due to the actions of stress hormones, glucocorticoids (GCs); GCs are critical during development but excess hormone can reduce growth and survival. Using non-invasive administration of GCs, H. Wada and C. W. Breuner examined the effects of brief, moderate elevations of GCs on begging behavior and growth (pp. 1696-1703), and show that GCs can have rapid, negative effects on begging behavior and negative effects on growth within 24 h. Photo courtesy of Haruka Wada.Close Modal - PDF Icon PDF LinkTable of contents
Join the JEB team
We are seeking a Reviews Editor to join the JEB team for 12 months as maternity cover. Find out more about this exciting opportunity to make a significant contribution to the leading journal in comparative physiology and biomechanics.
Call for papers - Building New Paradigms in Comparative Physiology and Biomechanics
Our upcoming special issue is welcoming submissions until 31 July 2021. The special issue will be published in early 2022 and will be widely promoted online and at key global conferences.
Sharpshooting archerfish brake to overcome recoil
Archerfish are exceptional snipers and now it turns out that they use their fins as brakes to counteract the recoil that would submerge them when taking out a target with a jet of water.
Responses of terrestrial polar arthropods to high and increasing temperatures
In a Review of thermal adaptation of polar terrestrial arthropods to high temperatures, Bahrndorff et al. conclude that a large variation in upper thermal limits exists across polar regions, habitats and species.
