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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.

 

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.

 

Short-toed Eagle meeting in Florac. Short review

Oct 20, 2012 / Comment
13.10 : participants of the Short-toed Eagle specialists meeting in Florac (Lozère, France). Photo by Christian Aussaguel14.10 : Jean-Pierre Malafosse tells about Short-toed Eagles in Lozère. Photo by Bernard Joubert

Short review of the Short-toed Eagle specialists meeting which was held in Florac, centre of Cévennes National Park /map/ (Lozère, France), on October 13-14:

3e Rencontre Circaète : Florac, 13 et 14 Octobre 2012 (Fr). Heartfelt thanks to Renaud Nadal for sharing this! The meeting was successful. Let’s wish the organizers to maintain this good tradition in the future!

 

Thoughts of behavioral ecology. Bernard Joubert

Feb 25, 2012 / Comment

Bernard Joubert in his article raises questions of the behavioral ecology of Short-toed Eagle. It is generally accepted that these aspects are highlighted very poorly in relation to the Eagle. This topic is very difficult, with a high probability of erroneous judgments. But at the same time it is extremely exciting and worthy of close attention:

• Bernard JOUBERT, 2012 – Quelques considérations d’écologie comportementale [Some considerations of behavioral ecology] // short-toed-eagle.net (Fr).

 

Photos of Short-toed Eagles of known age and sex

Aug 28, 2011 / Comment
Photos of Short-toed Eagles of certainly known age and sex

Dear Circaetus gallicus lovers and researchers! Let us, please, invite you to contribute your photos (info@short-toed-eagle.net) of the Eagles of age and sex known for certain. These photos will be inserted into the special gallery which has been created on initiative of Francesco Petretti. We aim to make something like an online handbook to help to describe differences between sexes and ages of Short-toed Eagle and finally to make their field identification easier. Each contributed photo should be supplied with information, examples of which can already be seen below each inserted image.

 

“L’aquila dei serpenti” – Francesco Petretti’s book

Feb 22, 2009 / 2 Comments
Cover of the book «L'aquila dei serpenti»

Some copies of the “L’aquila dei serpenti” book (It) by Francesco Petretti /map/ may be ordered directly from the author: FRANCESCO PETRETTI – VIA RASELLA 155 – 00187 ROMA Italie (pf@short-toed-eagle.net). The book consists of 270 pages, has comprehensive English summaries of each chapter and English captions of tables and figures. It costs 30,00 euros (postage included) and can be paid by a cheque.

L’aquila dei serpenti. Extracts (En) – by permission of Prof. Petretti we put here the Summaries of some Chapters of the book.