aerie

The word eyrie (also spelled aerie or eyry) designates the large nest of an eagle or other large bird of prey, typically built on a cliff, rocky ledge, or high tree. The word derives from Medieval Latin area, which originally meant 'a flat, open space,' 'a courtyard,' or 'a threshing floor.' The semantic journey from flat open ground to mountain nest is unusual but traceable: in Medieval Latin and Old French, the word aire came to mean 'nest' — possibly through the sense of the cleared, level platform that many large birds do create as the base of their substantial nests, or possibly through a convergence with the Germanic word for eagle. The Old French aire passed into Middle English as eire or aerie, and the spelling eyrie, with its suggestion of height and inaccessibility, became dominant in English usage by the sixteenth century.

In medieval falconry, the eyrie was of considerable practical and legal significance. Eyries of peregrine falcons, gyrfalcons, and other valued species were property — their locations were known to royal falconers, and the taking of eggs or young birds from an eyrie without permission was a serious offence against the crown. Falconers distinguished between eyesses (young birds taken from the nest before they could fly), ramage hawks (partially developed birds taken just as they began to leave the nest), and haggards (adult birds captured wild). Each type required different training approaches, and the eyess — the bird taken from the eyrie before flight — was considered the best starting point for a beginner, being most tractable because it had never experienced independent life.

The word entered poetic and literary use early, drawn by the obvious symbolic power of height and exclusivity. To call a place an eyrie was to claim for it the imperviousness, perspective, and predatory calm of an eagle at rest above the world it hunts. Medieval writers used the term in both literal and figurative senses, and the figurative sense has proven remarkably durable. Mountain fortresses, remote observation posts, isolated mansions, and privileged boardrooms have all been described as eyries by writers seeking to convey elevation above ordinary life. The metaphor works because it captures something real: the eyrie is where power rests between its sorties into the world below.

Today, eyrie remains current in both its literal and metaphorical senses. Conservation biology uses it to designate the nest sites of monitored raptor populations — the recovery of the peregrine falcon from near-extinction in the mid-twentieth century involved locating and protecting eyries from egg collectors, and the word appeared constantly in reports tracking the progress of the breeding population. Architecturally and metaphorically, eyrie describes any human habitation that combines extreme height with exclusivity — penthouse apartments, mountain chalets, remote observatories. The word has acquired a slight quality of admiring envy in contemporary usage: an eyrie is where one would wish to be, if one could get there.