Answers to Previous: 1. Barnacle Goose, 2. Black Oystercatcher (Haematopus bachmani) or Bachman's Warbler or Bachman's Sparrow, 3. Burrowing Owl or Northern Pygmy-Owl or Ferruginous Pygmy-Owl, 4. Bendire's Thrasher.
1. Great songstress of the cultivated field, in Greek
2. Neglected starling
3. Namesake dissected a species of northern manatee (also named after him), as well as reported a species of "white sea raven" in Alaska (which has never again been seen).
3. Georg Wilhelm Steller
To be more specific…
3. Bird’s named after Georg Wilhelm Steller: Steller’s Eider, Steller’s Jay, and Steller’s Sea-Eagle.