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Rovørn (Aquila rapax) Tawny Eagle belisarius -
Stemmer kan høres her (eksternt link)
Lokalitet:
Bale Mountains (4000 m asl) - Etiopien
2012-12-16
Fotograf: Thomas Varto Nielsen - Se profil

Titel: Streaked Tawny Eagle - Immature??

Beskrivelse: I upload one more photo of this bird, where the primaries are visible. Perhaps this can help determine the age of this bird.

Uploadet 2013-08-19 Publiceret 2013-08-19 Aquila rapax belisarius Tawny Eagle
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Kommentarer
Dick Forsman
22. aug. 2013 kl. 12:48
This image clearly shows that the bird is an immature. The outer four primaries are retained juvenile feathers, as are some secondaries, visible in an another image posted earlier. This means, that the bird is approximately 2 years old.
Emmanuel Cappe
21. sep. 2013 kl. 10:56
Dick, is the shape of the retained four outer primaries that leads you to say they're juvenile ?

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