The Proto-Indo-European word *h₃or-no-
Word *h₃or-no-
Meaning eagle
See also Armenian: arcui ‘eagle’
Old Norse: ari ‘eagle’
Old Norse: arnar ‘eagle’
Old Norse: arnuz ‘eagle’
Old Norse: ǫrn ‘eagle’
Hittite: ḫa-a-ra-na ‘eagle’
Palaic: ḫa-ra-na-aš ‘eagle’
Proto-Anatolian: *hóron- ‘eagle’

Comments
Gm. arn/Aar, Arm. arciv/ardziv, Eng. earn/erne, Gk. orneon, Russ. orel, Lith. erelis, Ltv. ērglis, Hitt. ḫ aran, Polish orzeł, Welsh eryr, ON ari, Goth. ara, Alb. orë, Old Prussian arelis, Ir. irar/

Other words that might be of interest
*ker-1, kor-, kr- ‘a kind of sound, crane, crow’, *kVr-C- ‘crow, raven’, *ĝhan-s ‘goose’, *hₐn̥hₐti- ‘duck’, *h₂ewi- (nom. h₂ewi-s, gen. h₂wei-s) ‘bird’, *k̂órw-eh₂- ‘crow’, *ĝhy-~ĝyei- ‘bird of prey, kite?’, *hₐewei- ‘bird’, *wer- ‘crow’, *k̂yeino- ‘bird of prey, kite’, *pad- ‘duck, teal?’, *pipp- ‘young bird, nestling’, *(s)p(e)iko/ehₐ ‘bird, woodpecker’, *kap- ‘hawk, falcon’