Greater Spotted Eagle Aquila clanga is currently listed as Vulnerable under criterion C2a(ii) on the IUCN Red List because its global population is estimated to number just 5,000-13,200 mature individuals, extrapolated from an estimated 810-1,100 pairs breeding in Europe (BirdLife International 2004).
During the revision of the conservation status of Lesser Spotted Eagle A. pomarina at www.birdlifeforums.org in 2006 Martin Flade in litt. (2006) commented that Greater Spotted Eagle “is still quite common in the whole W-Siberian lowlands from Ural mountains to the middle Ob (and onwards to E-Siberia)”. No comprehensive assessment of the species’s population size globally or population trends in different parts of its range exists; however, given the species’s massive global range it is highly plausible that its population exceeds 10,000 mature individuals (the threshold for listing as VU under criterion C) and may warrant downlisting. The species is long-lived with an estimated generation length of 16.6 years (BirdLife International, unpublished data); if its population has declined by >30% over the past three generations (50 years) it would qualify as Vulnerable under criterion A2.
Information about the species’s population size and declines are requested to improve our assessment of its global status.
BirdLife International (2004) Birds in Europe: population estimates, trends and conservation status. Cambridge, UK: BirdLife International.
(This discussion was first started as part of the 2010 Red List update)