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Articles on Short-toed Eagle on Natuurtijdschriften

May 26, 2019 / Comment

The Natuurtijdschriften site was already mentioned on HoverOverUs. Here we present to your attention some more articles published in different years and dedicated particularly to Short-toed Eagles:

• Bas VAN GENNIP & Bert DE BRUIN, 1996 – Nieuw voor Groningen: Slangenarend [New for Groningen: Short-toed Snake Eagle] // De Grauwe Gors, Vol. 23, No. 4: pp. 113-114. – Short-toed Eagle. file (Nl).

• Arno IZAAKS, 2007 – Ruim vijf weken een Slangenarend Circaetus gallicus in de duinen van Meyendel (En) [More than five weeks an ST Eagle resided in the dunes of Meyendel] // De Takkeling, Vol. 15, No. 2: pp. 114-116. – Short-toed Eagle. file (Nl).

• Chris VAN DEURSEN, 2010 – Slangenarend waarnemingen (Circaetus gallicus) in de regio [Observations of Short-toed Snake Eagle in the region] // Fitis, Vol. 46, No. 3: pp. 125-126. – Short-toed Eagle. file (Nl).

• Willem VAN MANEN & Rob G. BIJLSMA, 2017 – Slangenarenden Circaetus gallicus in Nederland: voorschot op een broedgeval (En) [Short-toed Snake Eagle in the Netherlands: progress toward breeding attempt] // De Takkeling, Vol. 25, No. 3: pp. 224-241. – Short-toed Eagle. file (Nl).

All documents with mentions of STE can be found using the site search.

 

LTO projects on Short-toed Eagle in SE Poland

Apr 29, 2019 / Comment

Short-toed Eagle adult female, by Marcin LenartThe Lublin Ornithology Society started their projects on GPS-GSM telemetry of local adult Short-toed Eagles in 2012. Some results of them are available on sites of the society, as well as conservation programs. Just use the Polish name of the species «Gadożer» as a search word to find info regarding Short-toeds in the submitted files:

• LTO, 2017 – Strategia Ochrony Ptaków Strefowych na Lubelszczyźnie [Strategy for the conservation of nest zone protected birds in the Lubelszczyzna region]: 94 p. – Short-toed Eagle. file (Pl).

• LTO, 2018 – Project Report. Ochrona rzadkich ptaków strefowych w wybranych obszarach Natura 2000 na Lubelszczyźnie [Protection of rare zone birds in selected Natura 2000 areas in the Lubelszczyzna region]: 50 p. – Short-toed Eagle. file (Pl).

• LTO, 2018 – After-life Conservation Plan. Ochrona rzadkich ptaków strefowych w wybranych obszarach Natura 2000 na Lubelszczyźnie [Protection of rare zone birds in selected Natura 2000 areas in the Lubelszczyzna region]: 21 p. – Short-toed Eagle. file (Pl).

• LTO, 2019 – Conservation of nest zone protected birds in the selected Natura 2000 sites in the Lubelszczyzna region – LIFE+ FINAL Report: 101 p. – Short-toed Eagle. file (Pl) (En).

A pair of Short-toed Eagles on the nestAlso, you can read some fresh news about observations of local Short-toed Eagles on the LTO page on Facebook, and enjoy this short video taken at the nest of a pair where the male is tagged with the GPS-GSM transmitter.

 

Comparative studies of migration and distribution

Dec 8, 2018 / Comment

The authors of the following papers studied Short-toed Eagles among other Raptors. Here are the results of those comparative studies focused on monitoring of migrating birds and on distribution constraints:

M. PANUCCIO, M. GUSTIN, G. BOGLIANI, 2011 – A comparison of two methods for monitoring migrating broad-winged Raptors approaching a long water crossing // Avocetta, 35 (1-2): pp. 13-17. – Short-toed Eagle. file (En).

• J.L. TELLERÍA, G. FANDOS, E. TENA, R. CARBONELL, A. ONRUBIA, A. QNINBA, Á. RAMÍREZ, 2018 – Constraints on raptor distribution at the southwestern boundary of the Palaearctic: implications for conservation // Biodiversity and Conservation: pp. 1-17. (En).

 

An article on ST Eagle aggregations and dietary changes

Jan 30, 2018 / Comment

The represented article by Sameh Darawshi and others has been recently published in the latest issue of the Journal of Raptor Research:

Sameh DARAWSHI, Yossi LESHEM and Uzi MOTRO, 2017 – Aggregations and Dietary Changes of Short-toed Snake-Eagles: A New Phenomenon Associated with Modern Agriculture // Journal of Raptor Research, Vol. 51 (4): pp. 446-450. (En).

 

Bernard Joubert’s article on communication of ST Eagles

Dec 10, 2017 / Comment

Photos taken by Bernard Joubert: Short-toed Eagles' communication posturesThe following paper by Bernard Joubert on Short-toed Snake Eagle communication abilities was recently published:

• Bernard JOUBERT, 2017 – Circaète Jean-le-Blanc : des "mots" pour le dire [Short-toed Eagle: "words" to tell] // Rapaces de France, n° 19: pp. 54-55. – Short-toed Eagle. file (Fr) {rough translation}.

The summary

Short-toed Snake Eagles have the rich social language, various tools which help them to express their intentions and relation to behaviour of other representatives of their species. The main problem of studying their behavioural language is defined by difficulties of correct interpretations. Besides various vocal signals, these eagles reveal a rich body language vocabulary, thanks to the extraordinary plasticity of their plumage, which is used for hovering in different airflows while hunting. Simplistically, 3 types of signals are identified: those related to movements, postures and holding of plumage.

Examples of the gestural communication are: aggressive demonstratively slow and strong wing-beats, so-called «vulture» flights, territorial «festoon» display flights.

Communicating through postures includes: an aggressive «albatross» posture, a posture of «angel» which is used for marking a chosen nest for the partner.

Communicating through appearance changes at close contacts comprises states of occipital feathers and pupil size, which can express both tension and relaxation of birds.

This brief review is nothing more than an invitation to observe and puzzle out those various and subtle means of ST Eagles’ communication.

 

Another subspecies of Short-toed Eagle determined

Nov 30, 2017 / Comment

Quite many articles dedicated to Short-toed Eagle are reprsented on the ResearchGate and not yet described on our site. Currently, we’d like to mark one, which is very fresh, raising a topic of georgaphic variations at the farthest border of the species range /map/ and questioning again the concept of Circaetus gallicus as a monotypic species:

Shengrong Nathaniel NG, Les CHRISTIDIS, Jerry OLSEN, Janette NORMAN, Frank E. RHEINDT, 2017 – A new subspecies of Short-toed Snake-eagle from Wallacea determined from morphological and DNA comparison // Zootaxa, Vol. 4358, No. 2: pp. 365–374. (En).

The abstract of the paper available now is of great interest itself.

 

Breeding biology & interactions of STE & LLB in Israel

May 30, 2017 / Comment

The recently accepted article of Guilad Friedemann and others is a result of the study of interspecific interactions between Short-toed Eagles and Long-legged Buzzards and their breeding in the Judean Slopes /map/:

• Guilad FRIEDEMANN, Yossi LESHEM, Lior KEREM, Avi BAR-MASSADA & Ido IZHAKI, 2017 – Nest-site characteristics, breeding success and competitive interactions between two recently sympatric apex predators // Ibis. Accepted Author Manuscript. doi:10.1111/ibi.12498; the Supplementary online material – Short-toed Eagle. file (En).