On 11th January 2010, I watched an immature White-tailed Eagle Haliaeetus albicilla in west Lewis, Outer Hebrides. The bird repeatedly gathered snow in its talons, as if making snowballs, then flew up into the air and 'threw' (launched) them. The bird was a tagged individual, white 'Z', having fledged on Lewis in 2007 (RSPB pers. comm.). It would seem unlikely that a bird of this age would be underta...

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