The series consists of 121 watercolour paintings of birds, created by Elizabeth Gwillim while she was living in Chennai, India (then Madras). The birds were painted from life rather than from the skins or stuffed specimens used by many artists of her day. Many paintings feature their avian subjects within a full landscape. Some paintings contain inscriptions with species identifications and, occasionally, additional observations about the birds.

The collection contains 164 botanical and zoological paintings created chiefly by Elizabeth Gwillim as well as possibly by her sister Mary Symonds while living in Chennai, India (then Madras). The collection includes 121 watercolours of birds with inscriptions, 31 watercolours of fish, and twelve of flowers, drawn from life rather than specimens. The paintings reflect the sisters' time in Madras during which, as artists and letter writers, they created a substantial visual record of the landscape and inhabitants of Madras and environs. The paintings also reflect Gwillim's scientific pursuits, including her study of botany.

Series consists of 12 watercolour paintings of flowers by Elizabeth Gwillim, created while Gwillim was living in Chennai, India (then Madras). The paintings are preceded by pages of brief notes by Casey A. Wood. The flowers are identified by small caption titles written in pencil on each painting.