Search Results - "J. C. Senar"

Diet specialization in a generalist population: the case of breeding great tits Parus major in the Mediterranean area by Pagani-Núñez, E, Valls, M, Senar, J. C

“…The analysis of diet specialization provides key information on how different individuals deal with similar food and habitat constraints within populations…”
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A plastic device fixed around trees can deter snakes from predating bird nest boxes by Navalpotro, H., Mazzoni, D., Senar, J. C.

“…Several devices have been designed to prevent predation in nest boxes by mammals and birds. Although snakes are one of the most common predators in…”
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Population differentiation and restricted gene flow in Spanish crossbills: not isolation‐by‐distance but isolation‐by‐ecology by EDELAAR, P., ALONSO, D., LAGERVELD, S., SENAR, J. C., BJÖRKLUND, M.

“…Divergent selection stemming from environmental variation may induce local adaptation and ecological speciation whereas gene flow might have a homogenizing…”
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Familiarity adds to attractiveness in matters of siskin mate choice by Senar, J. C., Mateos-Gonzalez, F., Uribe, F., Arroyo, L.

“…There is currently considerable controversy in evolutionary ecology revolving around whether social familiarity brings attraction when a female chooses a mate…”
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Brighter yellow blue tits make better parents by Senar, J. C., Figuerola, J., Pascual, J.

“…species is directly related to the ingestion of caterpillars, so that a brightly carotene–coloured tit may be signalling its ability to find caterpillars, a…”
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Hematocrit Variation in Response to Altitude Changes in Wild Birds: A Repeated-Measures Design by Borras, A, Cabrera, J, Senar, J. C

“…Seasonal migration of a bird from lowlands to montane habitats should induce an increase in its hematocrit value. This relationship has been studied mainly in…”
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Absolute and relative signals: a comparison between melanin- and carotenoid-based patches by Senar, J.C, Quesada, J

“…Abstract Some signalling traits may be highly influenced by environmental factors, thereby decreasing between-year trait repeatability what could compromise…”
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Plumage colour is related to ectosymbiont load during moult in the serin, Serinus serinus: an experimental study by Figuerola, J., Domènech, J., Senar, J.C.

“…Various hypotheses propose that plumage ornamentation is a reliable indicator of the health or resistance to parasites and illness of individuals. The impact…”
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Female Siskins Choose Mates by the Size of the Yellow Wing Stripe by Senar, J. C., Domènech, J., Camerino, M.

“…Commonly, female birds use the brightly coloured patches on males to choose the best-quality mates. Coloured wing patches, however, have received little…”
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A plastic device fixed around trees can deter snakes from predating bird nest boxes by Navalpotro, H., Mazzoni, D., Senar, J. C.

“…Several devices have been designed to prevent predation in nest boxes by mammals and birds. Although snakes are one of the most common predators in…”
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An evaluation of monk parakeet damage to crops in the metropolitan area of Barcelona by Senar, J. C., Domènech, J., Arroyo, L., Torre, I., Gordo, D.

“…We evaluated damage to commercial crops caused by the monk parakeet, Myiopsitta monachus, in the Baix Llobregat agricultural area (1,024 ha) bordering the city…”
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Long distance dispersal of monk parakeets by Borray-Escalante, N. A., Baucells, J., Carrillo-Ortiz, J. G., Hatchwell, B. J., Senar, J. C.

“…Invasive species threaten biodiversity all around the world and for this reason, identifying the causes and mitigating their effects is a priority in…”
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Interlocality variation in speed of moult in the Citril Finch Serinus citrinella by Borras, A., Cabrera, T., Cabrera, J., Senar, J. C.

“…The speed of avian moult has been related to body condition, and this to habitat quality. These facts suggest a relationship between habitat quality and moult…”
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Metal exposure influences the melanin and carotenoid-based colorations in great tits by Giraudeau, M., Mateos-Gonzalez, F., Cotín, J., Pagani-Nuñez, E., Torné-Noguera, A., Senar, J.C.

“…Metals are naturally found in the environment but are also emitted through anthropogenic activities, raising some concerns about the potential deleterious…”
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Longevity records of citril finches Carduelis citrinella: analysing 43 years of continuous ringing by Borras, A., Cabrera, J., Cabrera, T., Colomé, X., Senar, J. C.

“…Longevity records (maximum lifespan) of free–ranging birds are basic to understand the evolution of avian senescence patterns. Here we provide minimum…”
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The diet of Monk Parakeet Myiopsitta monachus nestlings in an urban area: a study using stable isotopes by Mazzoni, D., Pascual, J., Arroyo, L., Montalvo, T., González-Solís, J., Senar, J. C.

“…Previous observations in Barcelona and other cities showed that approximately 40% of the food ingested by adult Monk Parakeets Myiopsitta monachus is of…”
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Status signalling and the ability to recognize dominants: an experiment with siskins (Carduelis spinus) by Senar, Juan Carlos, Camerino, Montse

“…) discriminate between dominant and subordinate individuals on the first encounter without requiring cues such as overt aggression, and prefer to join…”
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Great tits (Parus major) reduce body mass in response to wing area reduction: a field experiment by Senar, J. C.

“…Flight performance is crucial in determining whether a small bird will survive an attack by a predator. Given the importance of body mass in determining flight…”
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Diet assessments as a tool to control invasive species: comparison between Monk and Rose-ringed parakeets with stable isotopes by Borray-Escalante, N A, Mazzoni, D, Ortega-Segalerva, A, Arroyo, L, Morera-Pujol, V, González-Solís, J, Senar, J C

“…Food is a main limiting factor for most populations. As a consequence, knowledge about the diet of invasive alien species determines the design of control…”
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Status signalling, metabolic rate and body mass in the siskin: the cost of being a subordinate by Senar, Juan Carlos, Polo, Vicente, Uribe, Francesc, Camerino, Montse

“…The higher metabolic rate of dominant individuals, found in different species, has been interpreted as the cost that prevents subordinates from cheating by…”
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