Micronesia

“ They sail by the stars, and are accustomed to undertake long voyages.
The southernmost group of Micronesia, commonly known as the Kingsmill Islands, was visited and partly surveyed by the vessels of the Wilkes Exploring Expedition. During a very brief intercourse with the natives of the principal island, Taputeuea, large quantities of what was at first supposed to be an ornament were obtained from the natives, in exchange for other wares which they valued. ”

“ Yap, Truk, Ponapé, and Kusaie. The other islands of Micronesia are "low" coral islands, which often lack fresh water and have a meager variety of fruits, insects and other foods. Thus, if birds do reach Micronesia but arrive at the atolls instead of the "high" islands, these birds may be doomed. It is noteworthy that the Micronesian islands are small compared with the Solomons, Fijis, and others. The smaller the island, the fewer the number of ecologic niches and the fewer the kinds of birds present. ”

“ The areas of the Moluccas and of Celebes (Malaysia) supplied 21 percent of the birds; the Philippines, 10 percent; Polynesia, 9 percent; and Palearctica, 8 percent. Results of this study show that there may have been only 46 actual colonizations of Micronesia by birds from other areas, and that many of the large number of endemics present have been the result of secondary colonizations within the islands of Micronesia. It is concluded that Micronesia, except for the Marshall Islands, has a much closer affinity to Melanesia than to any other area as regards avifauna. ”

“ Peoples in other islands and lands of the North Pacific, including the Ryukyus, Guam, the Trust Territories, the western shores of Canada and Alaska and the Aleutians are also enrolling under the banner of the Most Great Name, and next Ridván yet another pillar of the Universal House of Justice is to be raised in Micronesia. ”

“ As might have been expected, the taboo is found, though in a less marked form, among the Micronesians, Malays, and Dyaks, all of whom are ethnologically connected with the Polynesians. In Micronesia both the name and the institution occur: the inhabitants of certain islands are forbidden to eat certain animals and the fruits of certain trees; temples and great chiefs are tabooed from the people; any one who fishes must previously for twenty-four hours abstain from women ”

“ This conclusion is based on the fact that the adult female of E. t. insperatum has distinctive reddish coloring and lacks the barring on the underparts, and that it may have been derived from an ancestral stock, which was reddish and not barred, such as E. t. remotum of the New Ireland area. The three subspecies in Micronesia may represent remnants of a single colonization, since additional material from Yap may prove that this island population has characters intermediate between those of the other subspecies of Micronesia. ”

“ Remarks.—Birds taken in Micronesia differ only slightly from those from other areas in Oceania. Within Micronesia (see table 15) the birds from the Palaus have the shortest wing and shortest exposed culmen.
The White-tailed Tropic Bird appears more numerously in western and northern Micronesia than in the Marshall Islands. This distribution may be correlated with a preference for the "high" islands; especially those which have rocky cliffs, including Guam, Rota, [Pg 74] Peleliu, Angaur, and Truk. Reports were received in 1945 that the birds were only infrequently seen at Ulithi, a low atoll. ”

“ Populations of Shore Birds in Micronesia
Although shore birds have been observed in Micronesia on many occasions, actual counts of numbers of individuals of the different birds have rarely been made. Kubary, Finsch, Marche, Seale and other early collectors and observers record some data of this kind [Pg 38] as have the Japanese investigators in later times. William Coultas of the Whitney South Sea Expedition obtained considerable information of this nature at Guam, Saipan, Kusiae, Ponapé, and the Palaus, but it is unpublished. ”

“ The colonization of Micronesia by these species has probably extended over a considerable period of time. Megapodius, Trichoglossus, and Aplonis corvinus may represent older [Pg 45] colonizations which have become well differentiated from the ancestral forms; Nycticorax, Myzomela, and Erythrura may have become established later and have had "less time" to become modified from the ancestral forms. Birds from Melanesia have reached Micronesia probably by direct flight to the Caroline Islands. ”

“ But in Polynesia, Melanesia, Micronesia,—in all the distant land-specks of the Pacific,—contact was impossible in the larger sense. Though canoes did slide into strange harbors or drift or row in and about the atolls, they afforded at most romantic stimuli to these isolated groups. Infusion of culture was very difficult. ”

“ In Micronesia: Mariana Islands—Guam, Rota, Saipan; Palau Islands—Babelthuap, Koror, Arakabesan; Caroline Islands—Truk, Ponapé, Kusaie.
Characters.—A small shearwater with upper parts sooty-black; under parts white except for sides of breast grayish and under tail-coverts blackish; bill blackish; feet yellowish, outer toe black.
Measurements.—Measurements of 17 adult birds (9 males, 7 females, 1 unsexed) from Micronesia (Palau, Truk, Ponapé, Kusaie) and 10 adult birds (6 males, 4 females) from the Phoenix Group (Enderbury, Canton) are listed in table 14. ”

“ Under the Compacts, the Federated States of Micronesia and the Republic of the Marshall Islands became self-governing sovereign states, in free association with the United States. Following the changes in political status of the Northern Mariana Islands, the Marshall Islands, and the Federated States of Micronesia, the Trusteeship Agreement ceased to be applicable to those entities and only Palau remained as the Trust Territory of the Pacific Islands. ”

“ Two terns, Sterna sumatrana and Thalasseus bergii, have reached Micronesia, either directly or indirectly, each from a dispersion point somewhere in the Melanesian or the Malayan area. These two birds are restricted in their ranges to the western Pacific and the Indian oceans.
Many of the species of oceanic birds found in Micronesia have circumtropical ranges. These include Puffinus pacificus, P. lherminieri, Phaëthon, Sula, Fregata, Sterna anaethetus, S. fuscata, Anoüs stolidus, A. tenuirostris, and Gygis alba. ”

“ Introduction of wild animals and plants have not been so extensive as in the Hawaiians or other islands. There have been at least five importations of land birds to Micronesia as well as several mammals, other vertebrates and invertebrates. The effect of these established colonies on the native bird life has not been studied. ”

“ Intermixture.—Considerable, i.e. with Polynesians, Philippine islanders, Spaniards.
Rota and Tinian are remarkable for containing the remains of massive stone buildings; the original use of which is wholly unknown to the present natives. The same phenomenon will be repeated in Tonga-tabú and Easter Island.
The Mariannes form the most northern portion of Micronesia. The direction will now be due east from the cluster of Goulou; about mid-way between the Pelews and Yap.
OULUTHY GROUP.
Synonym.—Egoy Islands. ”

“ Micronesia, where the climate is tropical to subtropical, is better suited for colonization by birds from the tropics (Melanesia) than by birds from the temperate or cold climates (Palearctica) . The climatic factor may be one of the principal reasons why birds from Palearctica make up only a small part of the avifauna of Micronesia. ”

“ As shown in table 2 there are 30 kinds of oceanic birds in Micronesia, 18 kinds that are resident and 12 kinds that are regarded as visitors to the area. Records of nestings are few; field work in the future probably will yield evidence that more kinds of oceanic birds are actually resident in the Micronesian islands. ”

“ I quote myself, from an article in the Pacific Island Monthly:—“The problem of depopulation of natives in the Pacific need no longer exist. The formula for turning declining into increasing populations has been devised and put into operation by British Administrations in Central Polynesia, in Polynesian New Zealand, in British Micronesia (the Gilberts) , and in Melanesian Fiji. American Samoans are increasing under the operation of the same general formula.” ”

“ Birds of ancient, or possibly more recent, colonizations which initially reached or subsequently dispersed to many of the islands of Micronesia possessing habitat suitable for them. Examples are Myzomela cardinalis, the two species of Halcyon, Aplonis opacus, and Zosterops conspicillata.
4. Birds of rather recent colonizations, which may have reached only a few islands and are relatively unmodified from their parental stocks. Examples are Artamus leucorhynchus, Caprimulgus indicus, Poliolimnas cinereus, and Nycticorax caledonicus. ”

“ The oceanic avifauna of Micronesia contains birds which are apparently from ancestral homes in the Palearctic Region, in the North and Central Pacific, in Polynesia, in Melanesia and Malaysia, and from homes the positions of which are uncertain because of the widespread circumtropical occurrence of the birds. There are no sea birds that are endemic in Micronesia. ”

“ The relationships between Polynesian and Micronesian birds is evident, but insofar as the pathways of colonization are concerned the majority of these Micronesian species listed by Mayr have come from elsewhere than Polynesia and the birds of these two areas are thought to have arisen from common ancestors. Aphanolimnas, Ptilinopus, and Ducula apparently invaded Micronesia from Central Polynesia via the Marshall Islands through a rather continuous chain of islands and atolls. ”

“ In the past, expeditions have visited Micronesia with the aim of obtaining within a short time collections of the animal life as large and as representative as possible. Many of the collectors made few or no field notes on the bird life; some, like Finsch, Kubary, Marche, and Coultas, made valuable observations on the habits of the birds. Intensive ecological researches may be accomplished more thoroughly by resident investigators, who can devote full time to such pursuits. ”

“ Stresemann also points out that the birds are thus dependent on "narrowly limited ecological conditions." The birds are confined to certain areas and are, therefore, isolated from other populations. Most of the volcanic islands of Micronesia have numerous caves which are suitable to the swiftlets for nesting. C. inexpectata evolved in the Malayan region and apparently spread to Micronesia via the Philippines to Palau and to the Marianas. ”

“ In coloration there appears to be little difference between birds from the various localities in Micronesia. These birds may average slightly paler than populations from the continental areas, but on this basis I doubt that a person could recognize the Micronesian birds in a group of skins from many other localities. Birds in fresh plumage may show geographic differences better than slightly worn specimens. Measurements made by the author offer no clear-cut differences either. ”

“ Guam has the largest land surface of any of the islands of Micronesia with 225 square miles, Ponapé has 145 square miles, and Babelthuap has 143 square miles. Asuncion, in the northern Marianas, has the highest elevation, rising as an almost perfect cone to a height of 2,923 feet; Ponapé reaches a height of 2,579 feet above the sea level. The volcanic islands are known as "high" islands, and the coral atolls are known as "low" islands. The coral islands usually rise but a few feet above sea level. ”

“ However, mutation is the law of life. Even these small groups split into smaller factions. Some went south to the islands of the Antipodes and called themselves Maories; others went north of the equator and called themselves Hawaiians. The physical distribution of all the races in the Pacific, rooting, as we have seen, in Asia, represents a virile plant the stem of which runs eastward and is known as Micronesia and Melanesia, with the flowers, in all their diversified loveliness, Hawaii, Samoa, Tahiti, the Marquesas, and Maoriland. ”

“ In Micronesia, the NAMRU2 party observed Crested Terns at Ulithi, Peleliu and Truk, in August, September, and December, 1945, respectively. Birds were seen as singles or in small groups flying over the reefs. ”

“ Polynesia, the many eastern islands between 180 degrees and South America; Melanesia, the black islands, from the dark-brown color of their inhabitants—they include Fiji and all the islands west, with New Guinea; Micronesia, all the small islands north of the line from Hawaii on the east to China on the west. The South Sea islands are inhabited by only two races, the Malay Polynesian and the Papuan. The Malays appear to be of Asiatic origin, and are the superior race, with well-developed, powerful persons, yellow in color, and with straight, glossy, black hair. ”

“ It is thought by archeologists that the Polynesians moved eastward into the Pacific islands by way of Micronesia. The date of this wave of migration is thought to have been approximately 1200 A. D. What kinds of birds may have been exterminated by this earliest of human colonization cannot be ascertained. Edible species, particularly megapodes, rails, and pigeons, probably were eliminated or reduced in numbers, as is indicated by later discussions. ”

“ Possibly some species of plant-eating birds have reached Micronesia but have failed to establish themselves because of some dietary deficiency caused by poverty of the soils on which the plants grow. If a comparison were made of soils and of the food values of fruits of plants in both the islands of Micronesia and similarly sized islands in the Malay region, a difference might be revealed which would partly explain why some plant-eating birds have not become established in Micronesia. ”