Fabio Perco

• Direttore at Stazione Biologica Isola Cona

In the decade 1997-2006 the upper Adriatic coastal wetlands (Veneto and Friuli Venezia Giulia) hosted relevant wintering waterbird numbers: between 295,567 (1997) up to 517,596 (2005), with an overall trend of increase. In the year 2000 this area held almost one third of total wintering waterbirds throughout Italy. Several species (eg. Great White...

Lead concentrations in blood of 45 specimens of mute swan from the molting area of the Isonzo River Mouth Nature Reserve (Italy) were determined in two consecutive years (2006-2007), some birds were neck ringed to identify their homing behavior. The second sampling included whole body X-ray radiography and Cu and Zn plasma analyses to investigate t...

This paper presents an analytical treatment of dynamic soaring, a behaviour that certain sea birds use to extract energy from wind gradient. Theoretical modeling and results of numerical simulations, based on a two-degrees-of-freedom point mass model, are presented.

A single Eastern Reef Heron subject Egretta gularis, dark form, a taxon rarely observed in Italy, can be observed regularly since the year 2003 within the Isonzo River - Mouth Nature Reserve (Gorizia - Italy). Data collected show that the dark plumage is advantageous in the capture of prey in shaded sites and that it is less attractive and threaten...

In the decade 1997-2006 the upper Adriatic coastal wetlands (Veneto and Friuli-Venezia Giulia) hosted relevant wintering waterbird numbers: between 295,567 (1997) up to 517,596 (2005), with an overall trend of increase. In the year 2000 this area held almost one third of total wintering waterbirds throughout Italy. Several species (eg. Great White...

Provides the first estimates of the numerical composition distribution and population trend of griffon vulture in this region. -from Authors

Reports on large numbers of wintering bean geese, white-fronted geese and greylag geese. Data on composition of flocks, phenology, behaviour and influence on agricultural crops are given. -from English summary

id 'l di a quella di E. garzetta, come notarono M. Grussu e G. Poddesu esaminando un'esemplare di E. gularis in Sardegna. Anche il colore delle zampe è lo stesso di E. garzetta, con tibia e tarso g g p g , grigio-nerastri e piedi giallo vivo. Iride gialla e pupilla nera. In volo appare meno agile rispetto ad E garzetta con battiti d'ala più lenti e...

L'oca selvatica Anser anser è stata reintrodotta nei ripristini ambientali dell'Isola della Cona (Staranzano -Gorizia) tra il 1990 e il 1995 con lo scopo di formare una colonia nidificante che svolgesse un ruolo ecologico nel mantenimento di praterie umide e fungesse anche da attrazione di soggetti in migrazione (Utmar e Perco 1995; Perco et al. 19...