caa a22 4500 463176154 CHVBK 20180406164826.0 cr unu---uuuuu 170326e20071001xx s 000 0 eng 10.1007/s10336-007-0149-x doi (NATIONALLICENCE)springer-10.1007/s10336-007-0149-x Temperature but not rainfall influences timing of breeding in a desert bird, the trumpeter finch ( Bucanetes githagineus ) [Elektronische Daten] [R. Barrientos, A. Barbosa, F. Valera, E. Moreno] Reproductive performance in birds depends on several factors, one of the most important being the time of breeding. Birds try to fit offspring birth and growth to peak vegetative production in order to assure fledgling survival. In arid environments, where weather conditions are often extreme, birds must face unpredictable abiotic conditions. This study uses a border population of the trumpeter finch (Bucanetes githagineus) as a model to test whether climate variables (rainfall and temperature) influence breeding parameters by comparing 2years with very different weather. The study was carried out in the Tabernas desert (southeastern Spain) in 2004 and 2005. A comparison of laying dates in the 2years shows a 40-day delay in the date of the first clutch in the coldest year (mean minimum temperature 3°C lower in 2005 than in 2004). However, once the breeding season started, the number of clutches, clutch size, duration of the incubation period, nestling phase, fledgling rates and productivity were similar. One likely explanation for this delay is that low temperatures did not allow the germination of Diplotaxis sp., a plant forming the bulk of the trumpeter finch diet during spring. Its absence could prevent onset of breeding, although other temperature-related factors could also be involved. Although rainfall has frequently been reported as a limiting factor for arid bird species, our 2-year study shows that temperature can also influence the breeding biology of arid bird species, by affecting its timing. Dt. Ornithologen-Gesellschaft e.V., 2007 Arid lands nationallicence Breeding season nationallicence Bucanetes githagineus nationallicence Laying date nationallicence Low temperatures nationallicence Barrientos R. Estación Experimental de Zonas Áridas, Consejo Superior de Investigaciones Científicas, General Segura, 1, 04001, Almería, Spain aut Barbosa A. Estación Experimental de Zonas Áridas, Consejo Superior de Investigaciones Científicas, General Segura, 1, 04001, Almería, Spain aut Valera F. Estación Experimental de Zonas Áridas, Consejo Superior de Investigaciones Científicas, General Segura, 1, 04001, Almería, Spain aut Moreno E. Estación Experimental de Zonas Áridas, Consejo Superior de Investigaciones Científicas, General Segura, 1, 04001, Almería, Spain aut Journal of Ornithology Springer-Verlag 148/4(2007-10-01), 411-416 0021-8375 148:4<411 2007 148 10336 https://doi.org/10.1007/s10336-007-0149-x text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10336-007-0149-x text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Barrientos R. Estación Experimental de Zonas Áridas, Consejo Superior de Investigaciones Científicas, General Segura, 1, 04001, Almería, Spain aut NATIONALLICENCE 700 1- Barbosa A. Estación Experimental de Zonas Áridas, Consejo Superior de Investigaciones Científicas, General Segura, 1, 04001, Almería, Spain aut NATIONALLICENCE 700 1- Valera F. Estación Experimental de Zonas Áridas, Consejo Superior de Investigaciones Científicas, General Segura, 1, 04001, Almería, Spain aut NATIONALLICENCE 700 1- Moreno E. Estación Experimental de Zonas Áridas, Consejo Superior de Investigaciones Científicas, General Segura, 1, 04001, Almería, Spain aut NATIONALLICENCE 773 0- Journal of Ornithology Springer-Verlag 148/4(2007-10-01), 411-416 0021-8375 148:4<411 2007 148 10336 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer