Gathering information on the distribution and population size is crucial in order to develop precise conservation actions, especially in threatened species or those of special concern. The aim of the present article is to update the population status and the breeding parameters of the Peregrine falcon Falco peregrinus L., 1756 in Gipuzkoa. We also used data obtained from previous studies in order to estimate population trends in the region (2000-2017). In 2017, 35 territories were detected. During the period from 1990 to 2000, the mean breeding population size increased 79.4%, but from 2000 to 2017, the increase was just 3.2%. However, the latter increase was not statistically significant. Therefore, it can be concluded that the population has remained stable for the last two decades. The Peregrine falcon is well distributed in Gipuzkoa, except for the central-eastern part of the region. The nests were found on inland cliffs (48.6%), marine cliffs (25.7%), quarries (22.9%) and buildings (2.9%). The breeding parameters in 2017 (productivity: 1.72 ± 1.36 offspring/breeding pair, n = 35; flight rate: 2.50 ± 0.83 offspring/nest, n = 24; breeding 7 Peregrine falcon in Gipuzkoa
ResumenEl milano real Milvus milvus L., 1758 es una especie con alto interés desde el punto de vista de la conservación. Con el objeto de mejorar nuestro conocimiento, tanto sobre el tamaño de la población nidificante de milano real en Gipuzkoa como de algunos parámetros básicos de la reproducción, durante el periodo de cría de 2014 y 2015 se desarrolló un programa específico de búsqueda de nidos y de seguimiento de la reproducción. El objetivo de este artículo es describir los resultados que se obtuvieron en este programa. En conjunto, se detectaron 21 nidos en total. La inmensa mayoría (71,4%) de ellos se localizó en el sureste de la provincia, si bien ésta ha sido la zona más prospectada. Por años, en 2014 se localizaron un total de nueve nidos. En 2015 detectamos incubación en 12 nuevos nidos más siete de los de 2014. En dos de los nidos del 2014 se observaron adultos en la zona en 2015, si bien no se llegó a detectar incubación. La productividad (±SE) en 2014 (n = 9) es de 1,8 ± 0,4 pollos/nido y el éxito de cría, 88,8% (8 de 9). En 2015, la productividad bajó a 1,0 ± 0,2 pollos/nido y el éxito de cría, al 58,0% (n = 19). Globalmente, los valores que se observan en Gipuzkoa están en el rango registrado para otras zonas de Europa.Palabras clave: Campiña, conservación de aves, especies amenazadas, productividad, rapaces. 33Parámetros reproductivos del Milano Real en Gipuzkoa Munibe, Cienc. nat. 64, 2016 • pp. 33-40 • Donostia/San Sebastián • ISSN 0214-7688 • eISSN 2172- AbstractThe red kite, Milvus milvus L., 1758 is a species of concern. With the aim of improving our knowledge of the red kite population size and main breeding parameters in Gipuzkoa, in 2014 and 2015 we conducted a survey to look for nests and monitor breeding performance.We found a total of 21 nests. Most of them (71.4%) were detected in SE Gipuzkoa, although this was also the area where the most intensive sampling took place. In 2014, we found nine nests. In 2015, we detected incubation in 12 additional new nests and in seven of those detected in 2014. Moreover, in two of the nests found in 2014, we detected adults in 2015. We measured a productivity (±SE) in 2014 (n = 9) of 1.8 ± 0.4 chicks/nest, and breeding success reached 88.8%. In 2015, productivity was 1.0 ± 0.2 chicks/nest, and breeding success reached 58.0% (n = 19). Overall, these values would fall within the range found in other areas in Europe.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
customersupport@researchsolutions.com
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Copyright © 2025 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.