Calypte anna (Lesson, 1829)
Literature
| Authors | Title |
Year of Publication |
|---|---|---|
| W.H. Baltosser | Age, species, and sex determination of four North American hummingbirds | 1987 |
| G.A. Bartholomew; J.R.B. Lighton | Oxygen consumption during hover-feeding in free-ranging Anna Hummingbirds | 1986 |
| L.W. Arnold | Observations upon hummingbirds | 1930 |
| J. Berlioz | A new hummingbird hybrid. Calypte anna x Stellula calliope | 1930 |
| R.H. Canterbury | Early nesting of the Anna Hummingbird at Santa Barbara, California | 1929 |
| J.H. Bowles | Early nesting of Allen Hummingbird at Santa Barbara | 1912 |