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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
In the field: an interview with Harald Wolf
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In our new Conversation, Harald Wolf talks about his fieldwork experiences working with desert ants in Tunisia to understand their navigation.
Propose a new Workshop
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Our Workshops bring together leading experts and early-career researchers from a range of scientific backgrounds. Applications are now open to propose Workshops for 2024, one of which will be held in a Global South country.
Julian Dow steps down and John Terblanche joins the JEB team
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After 15 years with the journal, Julian Dow from University of Glasgow, UK, is stepping down as a Monitoring Editor. We wish Julian all the best for the future and welcome John Terblanche, Stellenbosch University, South Africa, who is joining the team. Julian talks about his long association with The Company of Biologists and the journal and John tells us about his life and career in this News article.
An accelerometer-derived ballistocardiogram method for detecting heart rate in free-ranging marine mammals
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Max Czapanskiy and co show how the resting heart rates of blue whales are immortalized in the accelerometry traces collected by motion sensing data tags.
Global change and physiological challenges for Amazonian fish
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In their Review, Adalberto Luis Val and Chris Wood discuss the physiological threats to the unique and diverse fish fauna of Amazonia.
