All very typical French boudoir art of the 1920's and 30's, fashionable young ladies out in their best evening wear playing with birds, as one does Executed in the popular style of Louis Icart. These ones probably date to the late 1920's or very early 1930's.
From the picture they look to be correct copper plate dry point etchings, some with aquatint colour. All are signed and have a numbered edition. However, who is this artist ?? A Cely ?? not sure but what ever it reads, it's a new artist to me and I need more information - Can You Help ??
Here are a few more by the same artist.
These feel a little later early 1930's - again similar subjects to Icart.