Two Birds (Ptilonopus Auranthfrons)

Visually similar

Plate 52 — The birds of New Guinea and the adjacent Papuan islands, v.5 (1875-1888)
Plate 52 — The birds of New Guinea and the adjacent Papuan islands, v.5 (1875-1888)
John Gould, 1875
Plate 5 — The birds of Great Britain, v.4 (1873)
Plate 5 — The birds of Great Britain, v.4 (1873)
John Gould, 1873
Plate (leaf 4) — A monograph of the Trogonidæ or trogons, pt.1 (1858)
Plate (leaf 4) — A monograph of the Trogonidæ or trogons, pt.1 (1858)
John Gould, 1858
Plate 67 — The birds of Australia, supplement, supplement volume (1869)
Plate 67 — The birds of Australia, supplement, supplement volume (1869)
John Gould, 1851
Plate 16 — The birds of New Guinea and the adjacent Papuan islands, v.4 (1875-1888)
Plate 16 — The birds of New Guinea and the adjacent Papuan islands, v.4 (1875-1888)
John Gould, 1875
Plate 33 — The birds of New Guinea and the adjacent Papuan islands, v.4 (1875-1888)
Plate 33 — The birds of New Guinea and the adjacent Papuan islands, v.4 (1875-1888)
John Gould, 1875
Plate 36 — The birds of New Guinea and the adjacent Papuan islands, v.4 (1875-1888)
Plate 36 — The birds of New Guinea and the adjacent Papuan islands, v.4 (1875-1888)
John Gould, 1875
Plate 55 — The birds of New Guinea and the adjacent Papuan islands, v.5 (1875-1888)
Plate 55 — The birds of New Guinea and the adjacent Papuan islands, v.5 (1875-1888)
John Gould, 1875
Plate 22 — The birds of New Guinea and the adjacent Papuan islands, v.1 (1875-1888)
Plate 22 — The birds of New Guinea and the adjacent Papuan islands, v.1 (1875-1888)
John Gould, 1875
Plate (leaf 6) — A monograph of the Trogonidæ or trogons, pt.1 (1858)
Plate (leaf 6) — A monograph of the Trogonidæ or trogons, pt.1 (1858)
John Gould, 1858
Plate 52 — The birds of Australia, supplement, supplement volume (1869)
Plate 52 — The birds of Australia, supplement, supplement volume (1869)
John Gould, 1851
Plate 30 — The birds of New Guinea and the adjacent Papuan islands, v.4 (1875-1888)
Plate 30 — The birds of New Guinea and the adjacent Papuan islands, v.4 (1875-1888)
John Gould, 1875