Part 96

Specimens examined.--Total number, 16 (9 males, 6 females, 1 unsexed), as follows: Mariana Islands, USNM--Saipan, 1 (Dec. 15)--Tinian, 3 (Oct. 16, 23); AMNH--Saipan, 6 (July, Aug.)--Tinian, 6 (Sept.).

Molt.--Molt begins in July and extends through the autumn. Most of the specimens examined, that were taken in this period, are in molt.

Food habits.--Stott (1947:527) writes that the fantail forages for insects in the undergrowth and also while on the wing captures flying insects. Downs (1946:99) made similar observations concerning this bird at Tinian.

Remarks.--In studying the collection of fantails obtained by Marche at Guam and Saipan, Oustalet (1895:191) reached the conclusion that the birds from these two islands were the same as the bird from Yap, which he called R. versicolor. He thought that the white-throated birds were in breeding plumage, and that the black-throated birds (from Guam) were in autumn and winter dress. This error was corrected by Hartert (1898:53).

Downs (1946:98-100) has published some interesting observations concerning the fantail at Tinian. He describes feeding behavior and the song which he says is "a beautiful rolling whistle, starting rather shrilly, then rolling on. Something like a meadow-lark and song sparrow combined." Gleise (1945:220) estimated the population of fantails at Tinian to be "40-50" in 1945. In 1931, Coultas found the bird at Tinian but not at Saipan. Stott (1947:527) observed the bird at Saipan "in forested areas and vine-draped crevices in the lava above Magicienne Bay."

=Rhipidura rufifrons mariae= R. H. Baker

Rufous-fronted Fantail

Rhipidura rufifrons mariae R. H. Baker, Proc. Biol. Soc. Washington, 59, 1946, p. 7. (Type locality, Rota.)

Rhipidura rufifrons saipanensis Takatsukasa and Yamashina, Dobutsu. Zasshi, 44, 1932, p. 222 (Rota); Hand-list Japanese Birds (part), rev., 1932, p. 176 (Rota); Hand-list Japanese Birds (part), 3d ed., 1942, p. 195 (Rota); Mayr (part), Birds Southwest Pacific, 1945, p. 295 (Rota); Mayr and Moynihan (part), Amer. Mus. Novit., no. 1321, 1946, p. 3 (Rota).

Rhipidura rufifrons mariae Baker, Smithson. Misc. Coll., vol. 107, no. 15, 1948, p. 68 (Rota).

Geographic range.--Micronesia: Mariana Islands--Rota.

Characters.--Adult: Resembles adult of R. r. saipanensis, but with richer brown coloring on the breast and abdomen; darker above, especially the forehead, rump, and basal part of tail; chin with small mount of white; malar line of white thinner.

Measurements.--Measurements are listed in table 38.

Weights.--Baker (1946:78) records the weights of two adult males from Rota as 8.3 and 9.0 grams.

Specimens examined.--Total number, 2 males, from Mariana Islands, USNM--Rota (Oct. 22).

Remarks.--Takatsukasa and Yamashina (1932:222) published the first account of the fantail from Rota although Coultas (field notes) obtained a report of its presence at Rota in 1931. The NAMRU2 party obtained the two specimens studied, and reported that the birds were numerous in the forested areas of Rota in 1945.

=Rhipidura rufifrons versicolor= Hartlaub and Finsch

Rufous-fronted Fantail

Rhipidura versicolor Hartlaub and Finsch, Proc. Zool. Soc. London, 1872, p. 96. (Type locality, Uap.)

Rhipidura versicolor Gräffe, Journ. Mus. Godeffroy, 2, 1873, p. 123 (Yap); Sharpe, Cat. Birds British Mus., 4, 1879, p. 320 (Yap); Nehrkorn, Journ. f. Ornith., 1879, p. 402 (Yap); Oustalet, Bull. Soc. Philom. Paris, (7), 5, 1881, p. 76 (Uap); Schmeltz and Krause, Ethnogr. Abth. Mus. Godeffroy, 1881, p. 391 (Yap); Wiglesworth (part), Abhandl. und Ber. Zool. Mus. Dresden, no. 6, 1890-1891 (1891), p. 21 (Uap); Büttikofer, Notes Leyden Mus., 15, 1893, p. 78 (Uap); Oustalet (part), Nouv. Arch. Mus. Hist. Nat. Paris, (3), 7, 1895, p. 191 (Yap); Hartert, Novit. Zool., 5, 1898, p. 54 (Yap); Bolau, Mitteil. Naturhist. Mus. Hamburg, 1898, p. 54 (Yap); Matschie, Journ. f. Ornith., 1901, pp. 112, 113 (Yap); Dubois, Syn. Avium, 1, 1902, p. 277 (Yap); Reichenow, Die Vögel, 2, 1914, p. 267 (Yap); Takatsukasa and Kuroda, Tori, 1, 1915, p. 64 (Mackenzie = Yap); Kuroda, in Momiyama, Birds Micronesia, 1922, p. 66 (Yap); Hand-list Japanese Birds, rev., 1932, p. 176 (Yap).

Rhipidura rufifrons versicolor Mathews, Syst. Avium Australasianarum, 2, 1930, p. 489 (Uap); Hand-list Japanese Birds, 3d ed., 1942, p. 196 (Yap); Mayr, Birds Southwest Pacific, 1945, p. 295 (Yap); Mayr and Moynihan, Amer. Mus. Novit., no. 1321, 1946, p. 3 (Yap).

Geographic range.--Micronesia: Caroline Islands--Yap.

Characters.--Adult: Resembles R. r. uraniae, but chin and upper throat white; upper parts darker; abdomen whitish.

The description of the adult given by Hartlaub and Finsch (1872:96) is "Upper parts a rich brown with a slight reddish tinge; forehead bright rufous; upper and under tail-coverts rufous; throat white, margined underneath by an irregular jugular band of pure black; pectoral plumes black, broadly margined with yellowish white; middle of abdomen whitish, sides of a paler olive-brown under wing-coverts whitish; wing-feathers blackish brown; tail feathers brownish black, all largely tipped with white, the four middle ones rufous at the base, the white terminal spots becoming smaller towards the middle; beak fuscous, the under mandible paler except at tip; feet fuscous."

Hartert (1898:54) writes that R. r. saipanensis differs from the bird at Yap "in having the bases of all rectrices rufous, the rump and upper tail-coverts rufous. The sides of the abdomen are not olive-brown, but rufous."

Remarks.--No specimens of the Rufous-fronted Fantail of Yap have been seen by me. On the basis of published descriptions and comments, it appears that the bird is subspecifically distinct from the forms in the Marianas but shows close relationships to them. R. r. versicolor has the chin and throat white; R. r. saipanensis has the chin and part of the throat white and a heavy, white line in the malar region; R. r. mariae has the chin and only a small amount of the throat white and a thinner, white malar stripe; R. r. uraniae has only a small amount of white present on the chin and a very thin, white line in the malar region.

=Rhipidura rufifrons kubaryi= Finsch

Rufous-fronted Fantail