ArticleMovement ecology2020
Inter-individual differences in foraging tactics of a colonial raptor: consistency, weather effects, and fitness correlates.
Article in Movement ecology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed, 34 citations in OpenAlex.
- Oilbirds performing non-seasonal intra-tropical migrations reduce flight effort compared to individuals that frequently return to the colony roost.Movement ecology · 2026Article
- Early Post-Release Movement Convergence in Reintroduced Giant Pandas.Ecology and evolution · 2026Article
- Weather Conditions Are Systematically Associated With Long-Range Nonroutine Movements in a Large Scavenger.Ecology and evolution · 2026Article
- Both movements and breeding performance are affected by individual experience in the Bonelli's eagleEcology and evolution · 2024Article
- Links between energy budgets, somatic condition, and life history reveal heterogeneous energy management tactics in a group-living mesocarnivore.Movement ecology · 2024Article
- Advances in biologging can identify nuanced energetic costs and gains in predators.Movement ecology · 2024Review
- Extra food provisioning does not affect behavioral lateralization in nestling lesser kestrels.Current zoology · 2023Article
- Vegetation height and structure drive foraging habitat selection of the lesser kestrel (PeerJ · 2022Article
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Authors and funding
7 authors at 4 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundConsistent inter-individual differences in behavioural phenotypes may entail differences in energy efficiency and expenditure, with different fitness payoffs. In colonial-breeding species, inter-individual differences in foraging behaviour may evolve to reduce resource use overlap among conspecifics exploiting shared foraging areas. Furthermore, individual differences in foraging behaviour may covary with individual characteristics, such as sex or physiological conditions.
methodsWe investigated individual differences in foraging tactics of a colonial raptor, the lesser kestrel (
resultsWe obtained 489 foraging trips by 36 individuals. Two clusters of trips were identified, one (SF) characterized by more static foraging behaviour and the other (DF) by more dynamic foraging behaviour, with a higher proportion of flying activity and a higher energy expenditure compared to SF. Lesser kestrels showed consistent inter-individual differences in foraging tactics across weather condition gradients, favouring DF trips as solar radiation and crosswind intensity increased. DF trips were more frequent during the nestling-rearing than during the egg incubation stage. Nestlings whose tracked parent was more prone to perform DF trips experienced higher daily mass increase, irrespective of nestling feeding rates.
conclusionsOur study provided evidence that breeding lesser kestrels flexibly adopted different foraging tactics according to contingent weather landscapes, with birds showing consistent inter-individual differences in the tendency to adopt a given tactic. The positive correlation between the tendency to perform more energy-demanding DF trips and nestling growth suggests that individual differences in foraging behaviour may play a role in maintaining key life-history trade-offs between reproduction and self-maintenance.
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