Gertrude Anna Bertha Hermes OBE RA (August 18, 1901-May 9, 1983) was a British sculptor, wood engraver, lino-cutter, illustrator, and designer.
Biography on Wikipedia: https://en.wikipedia.org/wiki/Gertrude_Hermes
Swallows by Gertrude Hermes 1933 / Wood engraving on paper / 7-1/2″x5″ / Tate Britain, UK 
Bird in Hand by Gertrude Hermes 1931 / Lignum vitae wood / 15-5/8″x7-9/10″x5-1/4″ / The Whitworth, Manchester, UK
Gertrude Hermes on Artnet: http://www.artnet.com/artists/gertrude-hermes/
Further reading:
https://artuk.org/discover/artists/hermes-gertrude-19011983
https://www.anothermag.com/art-photography/8040/wild-girl-the-artistic-rebellion-of-gertrude-hermes
https://www.newstatesman.com/culture/art-design/2020/08/greats-outdoors-gertrude-hermes-and-landscape-ancient-and-modern
The Misty Miss Christy 