F. Casas

Publications45
h-index19
Citations834
Highly Influential Citations27
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Double-nesting behaviour and sexual differences in breeding success in wild Red-legged Partridges Alectoris rufa
TLDR
There was significant variation among years and between sexes in laying date, clutch size and hatching success, and the probability of clutch loss to predation differed between sexes, being much higher for nests incubated by females.
Fitness consequences of anthropogenic hybridization in wild red-legged partridge (Alectoris rufa, Phasianidae) populations
TLDR
Investigation of fitness differences between hybrid and “pure” red-legged partridges in a wild population located in central Spain shows that, despite lower survival, hybrid partridges breed in natural populations, so this could increase extinction risk of wild pure partridge populations, through releases of farmed hybrid birds.
Effects of human activity on physiological and behavioral responses of an endangered steppe bird
TLDR
Little bustard showed marked behavioral and physiological responses to human activities that peaked during weekends, in particular hunting, which might adversely impact wintering populations of this nongame endangered species, potentially counteracting conservation efforts conducted on local as well as foreign breeding populations.
Effects of hunting on the behaviour and spatial distribution of farmland birds: importance of hunting‐free refuges in agricultural areas
Hunting is one of the human activities that directly affect wildlife and has received increasing attention given its socioeconomic dimensions. Most studies have been conducted on coastal and wetland…
Prevalence of Escherichia coli, Salmonella sp. and Campylobacter sp. in the intestinal flora of farm-reared, restocked and wild red-legged partridges (Alectoris rufa): is restocking using farm-reared…
TLDR
It is suggested that farm-reared and restocked partridges can act as carriers of these three enteropathogens and highlight a potential risk of transmission to natural populations via the releases of farm- reared partridges.
Positive interactions between vulnerable species in agrarian pseudo-steppes: habitat use by pin-tailed sandgrouse depends on its association with the little bustard
TLDR
The results indicate a close positive association between pin-tailed sandgrouses Pterocles alchata and the little bustard Tetrax tetrax in agrarian pseudosteppes of central Spain, which is both declining in Europe, and implications for their management and conservation are discussed.
Bottoms up: great bustards use the sun to maximise signal efficacy
TLDR
The hypothesis that orientation of sexual displays in male great bustard (Otis tarda) depends upon position of the sun, i.e., males direct their uplifted white tails towards the sun in order to maximise signal detectability to distant females was tested.
Seasonal variations in habitat preferences of the pin-tailed sandgrouse in agrarian pseudo-steppes
Estudiamos el uso y las preferencias de habitat de la ganga iberica Pterocles alchata en el centro de Espana. Mediante radio-seguimiento caracterizamos el uso y seleccion de habitat a lo largo de un…
An improved night-lighting technique for the selective capture of sandgrouse and other steppe birds
The night-lighting technique is routinely used to catch birds. We improved this technique using a thermal infrared camera to catch steppe birds such as the sandgrouse. Target birds were located by an…
Body condition and parasite intensity correlates with escape capacity in Iberian hares (Lepus granatensis)
TLDR
A negative relationship between the hare’s escape duration and parasite burdens in various taxa as well as with parasite diversity is found, suggesting that its effect on anti-predation ability could be mediated by direct spoliation of host resources and/or by increasing requirements for anti-parasite defence.
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