But ... would Tõnn welcome company?
My impression is that GSEs are solitary birds, as most birds of prey.
Most birds uphold territories during the breeding season, maybe most sharply during its initiation when a mate has to be attracted and bonded. I seem to have read that a minority also guard ”foraging territories” to some extent outside breeding time.
The territorial instinct and competitiveness seems to be at its sharpest vis-a-vis own species.
So what about GSEs and species companionship versus rivalry?
That's an interesting question and since I have not yet really looked into GSE so far, but learnt a lot about LSE this year, I have been looking on.
From translating this article about wintering of LSE (viewtopic.php?p=114101#p114101
) I learnt, that LSE are wintering in groups though they are otherwise also solitary birds. So I tried to find out if GSE are similar or different.
From what I could find at a first look with Google, I found that they are not like LSE. They fly far, in this article http://www.raptor-research.de/pdfs/a_sp100p/a_sp115.pdf
Meyburg et al followed a bird with transmitter to Zambia, but nothing in the article suggests, that the bird met or stayed with a bigger colony or group of other GSE.
Another interesting article I have found http://ec.europa.eu/environment/nature/conservation/wildbirds/action_plans/docs/aquila_clanga.pdf
which also does not suggest GSE spending the winter in bigger groups. Maybe when Tõnn arrives at Hondo, the people there will be able to observe if he keeps to himself or gets "in touch" with the bird already there.