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Three young Short-toed Eagles were tagged with transmitters when they were yet in the nests in Hungary, Montenegro and Italy in 2019. The eagles now are 2cy immature birds, still being tracked and their migration behaviour is of great interest.

The presented article refers to the following: in spring ’81 the author discovered that a nest found in the previous year in the Pilis Mountains /map/ had fallen down. They built an artificial nest and kept watching the site. Later, they observed the pair occupying the nest and found egg remains under it on April 25, so the egg laying took place a few days earlier. It was the earliest known egg-laying of this species at that time. Since the pair was holding the territory they checked back in June 4 and found the female incubating. Despite the repeated egg-laying the fledgling left the nest early August.

• L. Haraszthy, 1982 – Kígyászölyv (Circaetus gallicus) pótköltése műfészekben [Repeated egg-laying of Short-toed Eagle in an artificial nest] // Madártani Tájékoztató, Oct-Dec.: pp. 266-267. – (Hu).

Thanks to Gábor Papp for sharing the text and its brief summary!

Returning to the important topic of correct identification of differently aged Short-toed Eagles in the nature, Gábor Papp has tried to briefly describe the main characters of juvenile, 2, 3 and 4 cy eagles, and also visual differences between adult males and females. His description are illustrated with the corresponding images. Here is two versions of the text, Hungarian and English ones:

• Gábor PAPP, 2015 – A kígyászölyv kor és ivarhatározása – segédlet a terepi megfigyelések minőségének javításához [Ageing and sexing of the Short-toed Eagle – an aid to improve the quality of field observations in Hungary] // short-toed-eagle.net – (Hu), (En).

Thanks to István Béres and Márton Horváth we are presenting here M. Sc. Thesis on the Short-toed Eagle population in the Zemplén Mountains /map/. This is results of 25 years’ monitoring work:

• István BÉRES, 2007 – A Kígyászölyv (Circaetus gallicus) viselkedési és fészkelési szokásai a Zempléni-hegységben [Behaviour and breeding habits of the Short-toed Eagle in the Zemplén-mountains] – M.Sc.Thesis – Debrecen: 56 p. – (Hu) {rough translation}.