[The decline of one of the most threatened European birds of prey: 41 years of observations on the Lanner, Falco biarmicus in Sicily]

  • Giovanni Salvo Racalmuto (AG), Italy.

Abstract

[The results of a research on Lanner in southern Sicily, carried out between 1978 and 2018, are reported. 32 Lanner nesting territories have been taken into account, from sea level up to 1200 m of altitude. Until 2005, there were about 25 nesting pairs in the area; but in the following years there was a steady decline. At least 16 sites have been gradually abandoned because of human persecution and, at a lesser degree, of the interference with the Peregrine falcon, Falco peregrinus, and the Bonelli’s eagle, Hieraaetus fasciatus. At present, the number of Lanner pairs breeding in the study area is around 12. From 120 nesting attempts followed, 216 youngs fledged, with a productivity of 1.80, with breeding success of 1.98, fledging rate of 2.40. Out of 109 nests in which there was egg laying, 90 were successful. Out of successful nests, 11 fledged 1 young (12.2%); 37 nests 2 youngs (41.1 %); 37 nests, 3 youngs (41.1%); 5 nests, 4 youngs (5.6%). The number of pairs that have laid eggs, in relation to the number of the monitored nests, was of 90.8%. The ratio between the number of nests in which youngs were raised and the number of pairs that laid their eggs was 88.1%. The ratio between the number of nests from which youngs fledged and the number of breeding pairs was 93.7%.The number of successfully breeding nests, in relation to the number of monitored nests, was 75%. As regards the diet, birds represent Lanner’s most frequent preys. Out of the 415 preys identified, 383 (92.3%) are made up of birds, 29 (7%) by small mammals, 3 (0.7%) by reptiles. In addition to human persecution, the population of Lanner in Sicily is influenced by interspecific competition, particularly with the Peregrine falcon; but in 2 cliffs, about 1 km long and with a substantial wealth of prey, both falcons have been successfully reproducing for over 10 years].

[Article in Italian]

 

Dimensions

Altmetric

PlumX Metrics

Downloads

Download data is not yet available.

References

Andreotti A. & Leonardi G., 2007 – Piano d’azione nazionale per il Lanario (Falco biarmicusfeldeggi). Quaderni di Conservazione della Natura, 24, Ministero dell’ambiente - Istituto Nazionale della Fauna selvatica.

BirdLife International, 2004 – Birds in europe. Population estimates, trends and conservation status. Birdlife Conservation series, Cambridge, 12.

BirdLife International, 2017 – European birds of conservation concern: populations, trends and national responsabilities. Birdlife International, Cambridge, UK.

Chiavetta M., 1981 – 11 anni d’osservazione sul Falco pellegrino (Falco peregrinus) e sul Falco lanario (Falco biarmicus) in un’area dell’Appennino settentrionale. Considerazioni sulla dinamica delle loro popolazioni. In: Atti I Convegno Italiano di Ornitologia. Farina A. (ed.). Regione Toscana; Centro italiano di studi ornitologici, Parma; Museo storia naturale della Lunigiana, Aulla (MS): 51-57.

Di Vittorio M., Di Trapani E., Cacopardi S., Rannisi G., Falci A., Ciaccio A., Sarto A., Merlino A., Zafarana M., Grenci S., Salvo G., Lo Valvo M., Scuderi A., Murabito L., La Grua G., Cortone G., Patti N., Luiselli L. & Lòpez-Lòpez P., 2017- Population size and breeding performance of the Lanner Falcon Falco biarmicus in Sicily: conservation implications. Bird study, 64: 339-343. DOI: https://doi.org/10.1080/00063657.2017.1359234

Mascara R., 1986 – Consistenza e note sulla biologia ri-produttiva del Lanario, Falco biarmicus, nella Sicilia meridionale. Rivista italiana di Ornitologia, Milano, 56: 203-212.

Massa B., Lo Valvo F., Siracusa M. & Ciaccio A, 1991 – Il Lanario (Falco biarmicus feldeggi Schlegel) in Italia: status, biologia e tassonomia. Il Naturalista siciliano, n.s., 15 (1): 27-63.

Mirabelli P., 1981 – Biologia del Falco lanario (Falco biarmicus) in Calabria: confronti con la biologia del Falco pellegrino (Falco peregrinus). In: Atti I Convegno Italiano di Ornitologia. Farina A. (ed.). Regione Toscana; Centro italiano di studi ornitologici, Parma; Museo storia naturale della Lunigiana, Aulla (MS): 149-154.

Salvo G., 1984 – Primi dati sulla biologia del Lanario, Falco biarmicus, nella Sicilia centro-meridionale. Rivista italiana di Ornitologia, Milano, 54: 244-250.

Salvo G:, 2001 – Andamento riproduttivo e dinamica della popolazione di Lanario Falco biarmicus nella Sicilia centro-meridionale. In: Atti XI Convegno Italiano di Ornitologia. Tellini Florenzano G., Barbagli F. & Baccetti N. (eds.). Avocetta, 25: 66.

Siracusa M., Lo Valvo F., Massa B., Ciaccio A. & Di Marca A., 1988 – Nicchia trofica di Lanario (Falco biarmicus) e Pellegrino (Falco peregrinus) in una regione di simpatria. In: Atti IV Convegno italiano di Ornitologia. Massa B. (ed.). Il Naturalista siciliano, Palermo, 12 (suppl.): 123-128.

Published
2020-05-29
Info
Issue
Section
Articles
Keywords:
Falco biarmicus feldeggii, status, biology, food, Sicily (Italy)
Statistics
  • Abstract views: 434

  • PDF: 186
How to Cite
Salvo, G. (2020). [The decline of one of the most threatened European birds of prey: 41 years of observations on the Lanner, <em>Falco biarmicus</em&gt; in Sicily]. Rivista Italiana Di Ornitologia, 89(2). https://doi.org/10.4081/rio.2019.454