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Posts tagged ‘individual variation’


Photos of Short-toed Eagles in Northern Ukraine in 2017

Jun 30, 2017 / Comment

PISMENNYI K. 2017. Northern UkraineCompiling of the next annual gallery has been started, the gallery of photos taken in different regions of Northern Ukraine this year. Each Short-toed Eagle identified individually is indicated, as always, in captions by a letter and a year of the first representation in photo galleries on the site. The collection will be updated after the season.

 

Short-toed Eagles in Northern Ukraine. Photos of 2016

Jan 31, 2017 / Comment

PISMENNYI K. 2016. Northern UkraineHere is the next annual gallery of pictures taken in Kiev, Chernihiv and Sumy Regions of Northern Ukraine in 2016. Short-toed Eagles of local pairs monitored during more than 10 years are captured in them. All the birds are indicated in captions by a letter and a year of the first representation in photo galleries on our site, starting with A11 – the old, very striped and dark-spotted, rather small but aggressive female living in the Mizhrichynskyi Nature Park /map/.

 

Migrations & wintering of STE, works of Ugo Mellone et al.

Sep 29, 2016 / Comment

An adult short-toed eagle reaching the Spanish coast of the Strait of Gibraltar during springThe following post is dedicated to migrations of Short-toed Eagles of the Apennine Peninsula; Ugo Mellone summarizes research and observational data on the topic obtained at the moment:

• Ugo MELLONE, 2016 – Resolving the puzzle of Short-toed Eagle migration // www.bou.org.uk (En).

The previously described article is currently available to download:

• Ugo MELLONE, Giuseppe LUCIA, Egidio MALLÌA, Vicente URIOS, 2016 – Individual variation in orientation promotes a 3000-km latitudinal change in wintering grounds in a long-distance migratory raptor // Ibis. Accepted Author Manuscript. doi:10.1111/ibi.12401 – Short-toed Eagle. file (En).

 

Fresh article on migration & wintering of Short-toed Eagle

Jul 30, 2016 / 1 Comment

The following article has recently been accepted for publishing online. The abstract and description are available for free at the moment:

Ugo MELLONE, Giuseppe LUCIA, Egidio MALLÌA, Vicente URIOS, 2016 – Individual variation in orientation promotes a 3000-km latitudinal change in wintering grounds in a long-distance migratory raptor // Ibis. Accepted Author Manuscript. doi:10.1111/ibi.12401 (En).

 

Video and pictures of STEs in Northern Ukraine in 2015

Feb 7, 2016 / Comment

This video is a compilation of various short parts of the filmingPISMENNYI K. 2015. Northern Ukraine done in Northern Ukraine during the last year’s season from spring to fall. The shown moments of Short-toed Eagles’ life are provided with explanatory subtitles. The second part of the annual photo gallery contains descriptions of behaviour and habits of local STEs as well. Please see them under each presented picture.

 

Two articles on Short-toed Eagle available online

Jan 19, 2016 / Comment

We wrote about these two papers (López-Iborra et al., Yáñez et al.) after they had been published. Now full texts of them are available as well:

• G. M. López-Iborra, R. Limiñana, D. Pavón and J. E. Martínez-Pérez, 2011 – Modelling the distribution of Short-toed Eagle (Circaetus gallicus) in semi-arid Mediterranean landscapes: identifying important explanatory variables and their implications for its conservation // European Journal of Wildlife Research, 57: pp. 83-93. – Short-toed Eagle. file (En).

B. Yáñez, A.-R. Muñoz, K. L. Bildstein, I. Newton, A. G. Toxopeus and M. Ferrer, 2014 – Individual Variation in the Over-Summering Areas of Immature Short-Toed Snake Eagles Circaetus gallicus // Acta Ornithologica, 49 (1): pp. 137-141. – Short-toed Eagle. file (En).

 

Reproduction of certain pairs within 10 years in Ukraine

Oct 31, 2015 / Comment

Comparative reproduction of Short-toed Eagle pairsHow different reproduction of different pairs can be? Some adult Short-toed Eagles occupy the same sites from year to year. They had yet been identified in 2011 by photos taken since 2006 and according to previous and new observations. The birds had got indexes A11, B11 etc. although, in spoken communication we give them more harmonious names: for example, K11 is Barry, B11 is Ospry, and so on. Then later pictures of the individuals repeatedly got into the annual photo galleries. The natural identifying details are general plumage patterns,PISMENNYI K. 2015. Northern Ukraine shapes of heads, wings, beaks and general silhouettes in flight from certain angles as well as signs of moulting. The number of the examined images should be enough to select the details and to collate them. Thus, now it is possible to compare the mean reproduction – Short-toed Eagle. file – of pairs of individuals identified from year to year for certain, definitely without replacements of mates and without clear differences in objective conditions for breeding.