Obs. Also 6 eyriar. [deriv. of eyrie = AERIE: see AERIE 2.] A brood (of swans).
 
1551.  Will C. Ferrers (Somerset Ho.). Eyriars of Swannes.
 
1715.  Kersey, Eyrar (O. R.) an Eyrie or Nest of young Birds.
 
184778.  Halliwell, Eyrar, a brood of swans. Sometimes the bird itself.