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Archive for 2013


Presentation on feeding ecology in Central Italy

Dec 26, 2013 / Comment

Francesco Petretti reports the findings of a long term study of the feeding ecology of two populations of Short-toed Eagle in Western Central Italy /map/: Maremma Regional Park /map/ and Tolfa hills. In both areas snakes represented the bulk of the diet, but there were significant differences in the selection of prey species with a higher number of “not-conventional prey species”, e.g. mammals and toads, in Maremma Regional Park and a stronger predation on Hierophis (Zamenis) viridiflavus in Tolfa hills. The study is in progress and will be implemented in 2014.

• Francesco Petretti, 2012 – Ecologia alimentare del Biancone (Circaetus gallicus) in due aree di studio in Italia Centrale [Feeding ecology of Short-toed Eagle in two study areas in Central Italy] – Short-toed Eagle. file (It) – presentation, 20 pages.

55 days old Short-toed Eagle chick with a Common Whip Snake (Zamenis viridiflavus) in the nest. Photo by Francesco Petretti
The presentation is published on the Stazione Romana Osservazione e Protezione Uccelli (SROPU) website. It contains tables, diagrams and beautiful photos of Short-toed Eagles and snakes.

 

Section of the LPO website dedicated to ST Eagle

Dec 22, 2013 / Comment

Circaète - LPO Mission rapacesJust a few words about a section of the LPO (Ligue pour la Protection des Oiseaux) Mission rapaces website. The section is dedicated to Short-toed Eagle and consists of the following subsections:

› Actualitésnews, also you can subscribe to the feeds;

› Le Circaètegeneral info about Short-toed Eagle in France;

› Suivi et conservationmonitoring and conservation;

› Sensibilisationsources of detailed information;

› Les acteurs locauxlocal stakeholders in a map.

Now the section is updated regularly. Please subscribe to the news via RSS to be notified about news.

 

Some results of Short-toed Eagle monitoring in Ukraine

Nov 29, 2013 / Comment

Monitoring of 9 different pairs of Short-toed Eagles has been conducted during 10 years in Northern Ukraine (Kiev Region /map/, Mizhrichynskyi Park /map/ of Chernihiv Region, southern part of Sumy Polissya /map/). Some calculations and results of the monitoring are represented in tabular forms:

K. PISMENNYI, 2013 – Some data on breeding of Short-toed Eagle in Northern Ukraine // short-toed-eagle.netShort-toed Eagle. file; in the form of XLS file with formulas: Short-toed Eagle. file (En).

Juvenile Short-toed Eagles have recently left their nests. Typical (left) and untypical (right) behaviour in the presence of humanAverage breeding success amounts to 0.60 juvenile / territorial pair and is quite close to this index for France: 0.57. The last result is based on observations of 2835 (!) breeding cases which have been managed to make by French national Circaetus gallicus network for 11 years (Bernard Joubert, personal communication). Also some other conclusions can be made: old pines (Pinus sylvestris) are prefered by Short-toed Eagles for nesting in Northern Ukraine; the eagles more often change their nests than they successfully breed; nest height is highly variable; the eagles’ choice of a nest depends on their previous breeding success; after an unsuccessful season the nest is changed with high probability, after successful one the following choice of a nest is unpredictable.

 

Some photos taken by Frédéric Pelsy

Nov 23, 2013 / Comment
PELSY F. 2011-2013. Sologne

We would like to express our gratitude to Frédéric Pelsy for sharing these not numerous, but marvelous pictures of Short-toed Eagles in Sologne (France) /map/. The male and the females are well recognizable by colouration of their plumage which is seen in detail. Because of that several of the photos have also been added to our Age/Sex handbook.

 

Moulting of the biggest flight feathers of ST Eagles

Oct 31, 2013 / Comment

Recognizing the same Short-toed Eagle male (K11) from shorter and longer (0.8-0.9 km) distances based on condition of 14 the biggest flight feathers During 10 years of observations in Central Northern Ukraine (Kiev Region /map/, Mizhrichynskyi Park /map/) a lot of photos of several the same Short-toed Eagles have been taken. Some of them can be viewed in the galleries (just an example). Since Short-toed Eaglers’ the biggest flight feathers are often seen from a great distance they are easily recognizable in photos. Especially it concerns 4th-10th primaries of both wings. Accumulation of data allowed to determine inter-moulting periods of certain feathers:

K. PISMENNYI, 2013 – Short-toed Eagle. Replacement of the biggest 14 flight feathers // short-toed-eagle.netShort-toed Eagle. file (En).

First of all, the results might be of interest as additional information for recognizing individuals in the nature from year to year, together with individually typical plumage colouration and silhouettes in flight at certain angles in certain poses. Regular photographing of Short-toed Eagles at their breeding sites and foraging grounds allows to distinguish them with high probability without special marking, without stressing and often even without disturbing the birds at all.

 

Interview with G. Moreno-Rueda on EuropeanRaptors.org

Oct 19, 2013 / Comment

Short-toed Eagle in Spain The interview has been published on the European Raptors website yet on March 12. This, already the forth one dedicated to Short-toed Eagle on the site, was taken by Markus Jais on February 20. This time Gregorio Moreno-Rueda shares his knowledge about the feeding ecology of Short-toed Eagles in Spain, their threats, why they lay only one egg and how the future looks like for those impressive raptors in that impressive country.