ArticleCurrent zoology2016
GPS tracking of non-breeding ravens reveals the importance of anthropogenic food sources during their dispersal in the Eastern Alps.
Article in Current zoology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.
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16 citing papers in PubMed, 35 citations in OpenAlex.
- Fluctuations in direct human presence, not predictable weekly cycles, influence avoidance behaviour in ravens.Movement ecology · 2026Article
- Spatio-temporal patterns of juvenile common ravens integrating into a free-flying non-breeder flock.iScience · 2026Article
- Fission-fusion dynamics and spring movements in first-year carrion crows Corvus corone challenge the efficiency of culling strategies.Scientific reports · 2025Article
- Age-related nest-site segregation in a solitary nesting population of white stork Ciconia Ciconia.Frontiers in zoology · 2025Article
- Influence of tree cover on carcass detection and consumption by facultative vertebrate scavengers.Ecology and evolution · 2024Article
- Why are ravens smart? Exploring the social intelligence hypothesis.Journal of ornithology · 2024Review
- The spatial and temporal exploitation of anthropogenic food sources by common ravens (Corvus corax) in the Alps.Movement ecology · 2022Article
- No fry zones: How restaurant distribution and abundance influence avian communities in the Phoenix, AZ metropolitan area.PloS one · 2022Article
- Who is crying wolf? Seasonal effect on antipredator response to age-specific alarm calls in common ravens, Corvus corax.Learning & behavior · 2021Article
- Decision time modulates social foraging success in wild common ravens,Ethology : formerly Zeitschrift fur Tierpsychologie · 2020Article
- Waste Disposal Sites as All-You-Can Eat Buffets for Carrion Crows (Animals : an open access journal from MDPI · 2019Article
- What constitutes "social complexity" and "social intelligence" in birds? Lessons from ravens.Behavioral ecology and sociobiology · 2019Review
- Raven food calls indicate sender's age and sex.Frontiers in zoology · 2018Article
- Fission-fusion dynamics over large distances in raven non-breeders.Scientific reports · 2017Article
- Loner or socializer? Ravens' adrenocortical response to individual separation depends on social integration.Hormones and behavior · 2016Article
- Counting crows: population structure and group size variation in an urban population of crows.Behavioral ecology : official journal of the International Society for Behavioral EcologyArticle
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Authors and funding
3 authors at 3 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
In many songbirds, the space use of breeders is well studied but poorly understood for non-breeders. In common ravens, some studies of non-breeders indicate high vagrancy with large individual differences in home range size, whereas others show that up to 40% of marked non-breeders can be regularly observed at the same anthropogenic food source over months to years. The aim of this study was to provide new insights on ravens' behavior during dispersal in the Eastern Alps. We deployed Global Positioning System (GPS) loggers on 10 individuals to gather accurate spatial and temporal information on their movements to quantify: 1) the dimension of the birds' space use (home range size with seasonal effects and daily/long-term travel distances), 2) how long they stayed in a dispersal stage of wandering as opposed to settling temporarily, and 3) their destination of movements. We recorded movements of up to 40 km per hour, more than 160 km within 1 day and more than 11,000 km within 20 months, indicating high vagrancy. Switching frequently between temporarily settling and travelling large distances in short time intervals leads to extensive home ranges, which also explains and combines the different findings in the literature. The destinations are rich anthropogenic food sources, where the birds spent on average 75% of their time. We discuss how ravens may find these "feeding hot spots" and which factors may influence their decision to stay/leave a site. The strong dependence on anthropogenic resources found in this population may have implications for site management and conservation issues.
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