Voices of birds. Rook (Corvus frugilegus)

The rook (Corvus frugilegus) is a member of the Corvidae family in the passerine order of birds.
Rooks are resident in Great Britain, Ireland and much of north and central Europe but vagrant to Iceland and parts of Scandinavia, where they typically live south of the 60th latitude and in habitats that ravens dislike, such as open agricultural areas. It also occurs as an eastern race in Asia where it differs in being slightly smaller on average, and having a somewhat more fully feathered face. In the north of its range the species has a tendency to move south during autumn though more southern populations are apt to range sporadically also.

[KororaPenguin]

These birds also belong behind passed Pawns, yours or your opponent's. ;þ