A Manual of Philippine Birds - Richard C. McGregor

a¹. Bill not spatulate.
- b¹. Central tail-feathers not greatly lengthened.
  - c¹. No wing-speculum; lower portion of tarsi with small reticulate scales in front. Dendrocygna (p. [187])
  - c². Wing-speculum present; lower portion of tarsi with transverse scutella in front.
    - d¹. Larger; bill broader; culmen more than 50 mm.
    - d². Smaller; bill narrower; culmen less than 45 mm.
- b². Central tail-feathers greatly lengthened. Dafila (p. [194])
a². Bill flattened and spatulate. Spatula (p. [196])

Genus DENDROCYGNA Swainson, 1837.

General color largely blackish and reddish or yellowish brown; breast more or less spotted; no bright colored speculum nor white wing-patch; inner web of first primary deeply scooped near its middle; next three quills slightly emarginate.

Species.

a¹. Wing-coverts deep chestnut.
- b¹. Fore part of head white. viduata [18]
- b². Fore part of head brown; breast rufous-chestnut with small black spots. arcuata (p. [187])
a². Wing-coverts blackish brown; breast and sides marked with round white spots. guttulata (p. [189])

155. DENDROCYGNA ARCUATA (Horsfield).

WANDERING TREE DUCK.

Anas arcuata Horsfield, Zool. Res. in Java (1822), pl. 65.
Dendrocygna arcuata Salvadori, Cat. Birds Brit. Mus. (1895), 27, 153; Oates, Cat. Birds’ Eggs (1902), 2, 158.
Dendrocygna arcuata Sharpe, Hand-List (1899), 1, 214; McGregor and Worcester, Hand-List (1906), 37.

Ba-li′-uis, Luzon; ná-ga, Ticao; ga-kit′, Bohol.

Bantanyan (McGregor); Basilan (Steere Exp., McGregor); Bohol (Everett, McGregor); Camiguin N. (McGregor); Catanduanes (Whitehead); Cebu (Everett); Guimaras (Steere Exp.); Leyte (Everett); Luzon (Cuming, Worcester, McGregor); Masbate (Bourns & Worcester); Mindanao (Everett, Bourns & Worcester); Mindoro (Bourns & Worcester, McGregor); Negros (Clarke MS.)[19]; Panay (Bourns & Worcester); Samar (Jagor, Steere Exp., Whitehead); Sibuyan (McGregor); Siquijor (Steere Exp., Bourns & Worcester, Celestino); Ticao (McGregor). Indo-Malayan Islands, Moluccas, Celebes, New Guinea, Australia, Oceania.