A5038315010- Animal Behavior and Reproduction
- Avian ecology and behavior
- Plant and animal studies
- Wildlife Ecology and Conservation
- Primate Behavior and Ecology
- Animal Vocal Communication and Behavior
- Bird parasitology and diseases
- Genetic and phenotypic traits in livestock
- Species Distribution and Climate Change
- Animal Ecology and Behavior Studies
- Animal Nutrition and Physiology
- Genetic Mapping and Diversity in Plants and Animals
- Family Dynamics and Relationships
- Livestock and Poultry Management
- Comparative Animal Anatomy Studies
- Insect and Pesticide Research
- Social Sciences and Policies
- Ecology and Vegetation Dynamics Studies
- Agricultural and Food Production Studies
- Animal Behavior and Welfare Studies
- Demographic Trends and Gender Preferences
- Fish Ecology and Management Studies
- Genomics and Chromatin Dynamics
- Genetic diversity and population structure
- Insect and Arachnid Ecology and Behavior
Universidad de León
2017-2024
Universidad de León
2023
Universidad de Valladolid
2007-2017
Management Research Institute
2010-2016
Uppsala University
2001-2005
Universidad de Sevilla
2003
University of Pavia
1993
Crows of a feather flock together Closely related species with overlapping ranges typically evolve genetic barriers to prevent crossbreeding. Poelstra et al. sequenced genes from two central European crows: gray-bodied hooded crows and black carrion (see the Perspective by de Knijff). Although most genomes shared between species, one region that affected coat color vision differed. The authors suggest gray-coated prefer mate birds like themselves. Science , this issue p. 1410 ; see also 1345
Avian brood parasites lay eggs in the nests of other birds, which raise unrelated chicks and typically suffer partial or complete loss their own brood. However, carrion crows Corvus corone can benefit from parasitism by great spotted cuckoo Clamator glandarius. Parasitized have lower rates predation-induced failure due to production a repellent secretion chicks, but among that are successful, those with fledge fewer crows. The outcome these counterbalancing effects fluctuates between...
In most cooperative vertebrates, delayed natal dispersal is the mechanism that leads to formation of kin societies. Under this condition, possibility kin-based breeding an unselected consequence patterns can never be ruled out because helpers only help their relatives. Here we show a population carrion crows (Corvus corone corone) fully fits central prediction selection theory should arise among On territory, resident breeders are aided not by nonbreeding retained offspring but also...
Kin-based societies, where families represent the basic social unit, occur in a relatively small number of vertebrate species. In majority avian kin form when offspring prolong their association with parents on natal territory. Therefore, key to understanding evolution birds is understand philopatry (i.e. tendency remain territory). It has been shown that, within populations, strength between and family stability) increases dispersal constrained by external environmental factors, but it...
Abstract Cooperatively breeding birds typically form cohesive and stable groups that live year‐round in all purpose territories where competition for resources is likely to arise. Understanding how group members negotiate over crucial because conflicts may disrupt the stability of ultimately hinder cooperation. However, social relationships within have been largely neglected so far. Here we investigated cooperatively carrion crows ( Corvus corone ) share a food source, by observing dyadic...
Life history theory predicts that mothers should trade off current and future reproductive attempts to maximize lifetime fitness. When breeding conditions are favourable, may either increase investment in the eggs improve quality of offspring or save resources for reproduction as good raising environment is likely compensate a 'bad start'. In cooperatively birds, presence helpers improves so vary number, size response composition group. Here, we show carrion crows Corvus corone corone, where...
The Carrion Crow (Corvus corone) is almost invariably reported as a species breeding unassisted pairs, but population of Crows c. from northern Spain that we have been studying since 1995 regularly exhibits cooperative breeding. Spanish thus demonstrates can vary greatly across populations. Most the territories (73.3%) in were held by cohesive groups, which consisted up to nine birds (mode = 3 birds). proportion fledglings delayed dispersal for one year varied between 12.2 and 47.5%...
Kin–based cooperative breeding, where grown offspring delay natal dispersal and help their parents to rear new young, has a long history in some avian lineages. Family formation helping behaviour extant populations may therefore simply represent the retention of ancestral features, tolerated under current conditions, rather than adaptive process driven by environmental factors. Separating these two possibilities challenges evolutionary biologists because tight coupling that normally exists...
1 The ecological factors that promote delayed dispersal of offspring in cooperatively breeding bird species are poorly understood. While single population studies have supported the view natal is as a consequence lack suitable vacancies (ecological constraints hypothesis), recent theoretical models claim habitat saturation cannot be main factor leading to kin sociality. 2 carrion crow (Corvus corone ssp.) an ideal model investigate ecology dispersal. occurrence sociality highly variable...
In many cooperatively breeding societies, helping effort varies greatly among group members, raising the question of why dominant individuals tolerate lazy subordinates. groups carrion crows Corvus corone , helpers at nest increase breeders' reproductive success, but chick provisioning is unevenly distributed non-breeders, with a gradient that ranges from work as much breeders to others completely refrain visiting nest. Here we show non-breeders represent an insurance workforce fully...
Abstract The Carrion Crow (Corvus corone) is almost invariably reported as a species breeding unassisted pairs, but population of Crows c. from northern Spain that we have been studying since 1995 regularly exhibits cooperative breeding. Spanish thus demonstrates can vary greatly across populations. Most the territories (73.3%) in were held by cohesive groups, which consisted up to nine birds (mode = 3 birds). proportion fledglings delayed dispersal for one year varied between 12.2 and 47.5%...
Anthropogenic food from refuse tips can affect population dynamics in birds, especially gulls, but the evidence is mostly circumstantial. We combine analyses of long‐term data and natural experiments to show a positive effect on growth Spanish breeding Rooks Corvus frugilegus . In this isolated around 2000 pairs, monitored since 1976, birds colonies less than 10 km fed largely refuse, particularly during periods lowest availability. Three lines support hypothesis that supply influenced...