57" [145 cm] in circumference and 12" [30.5 cm] deep
chickadee / 1 skein each: split pea 130 (A) / kumlien's gull 152 (B) / frank's plum 114 (C) nasturtium 136 (D) / kittywake 151 (E) / carrie's yellow 125 (F)
pair in size US 7 [4.5 mm] / one spare needle in same size
20 sts and 28 rows = 4" [10 cm] in stockinette stitch, after blocking
Cowl is knitted flat beginning with a provisional cast on. Live stitches are joined at the end with a three-needle bind off.
Provisional cast on (link provided), changing colors, three-needle bind off (instructions included).