Vet Rec. 1994 Jan 15;134(3):64-6. doi: 10.1136/vr.134.3.64.
The Veterinary record
D L Williams, J E Cooper
PMID: 8135016 DOI: 10.1136/vr.134.3.64
An unilateral ptosis in an African spotted eagle own was ameliorated by topical treatment with phenylephrine, strongly suggesting a diagnosis of Horner's syndrome, the first recorded case of this syndrome in a bird.