The Collaborative International Dictionary of English v.0.48:

Ey \Ey\, n.; pl. Eyren.
   See Egg. [Obs.] --Chaucer.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Eyren \Ey"ren\, n. pl.
   See Ey, an egg. Eyrie