The photograph here presents nine bird beads, representing different editions, with different characteristics—the actual canes being different from one another, their relative sizes, placement on beads, and bead sizes and shapes. The final bead copies a rolled-pad bead (though it isn't one), that would have probably been an import (in type), and would not (originally) have had birds on it.

The single bead shows a bead enlarged, with a good view of the bird canes.

JDA.