A List of the Birds Recorded from Bangka Island, Indonesia
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A LIST OF THE BIRDS RECORDED FROM BANGKA ISLAND, INDONESIA by G. F. MEES Mees, G. F.: A list of the birds recorded from Bangka Island, Indonesia. Zool. Verh. Leiden 232, 30-vi-1986: 1-176, figs. 1-8, tables 1-15. — ISSN 0024-1652. Key words: birds; list; Bangka; Indonesia. An enumeration of bird specimens from Bangka present in museum-collections, has resulted in a faunal list of 172 species (176 forms). A discussion is given of the zoogeography of the island, the avifauna of which is mainly Sumatran in its affinities, but with a distinct Bornean influence. In contradistinction to a previously-published opinion (de Schauensee, 1958), there is no recognizable Javanese element in the avifauna. G. F. Mees, Rijksmuseum van Natuurlijke Historie, Postbus 9517, 2300 RA Leiden, The Netherlands. TABLE OF CONTENTS Introduction 3 Acknowledgements 4 Topography 5 Ornithological history 7 Kannegieter's collection 14 Zoogeography 17 Introduction to the systematic list 20 Systematic list 21 Rejected records 152 Appendix 1: Diard's list 155 Appendix 2: biographical notes on collectors 157 References , 160 Recapitulation and register 169 INTRODUCTION The island of Bangka or Banka, off south-eastern Sumatra, has been neglected by ornithological collectors. The reason for this neglect is obvious: the island forms only a continuation of the eastern Sumatran lowlands, of which it formed part until the end of the last period of low sea-level, less than 15,000 years ago. The island lacks high mountains or other geographical features of the kind that attract ornithological collectors in their search for novelties. 3 4 ZOOLOGISCHE VERHANDELINGEN 232 (1986) Therefore it is perhaps not surprising that the first attempt to compile a complete list of the birds of Bangka was made less than thirty years ago (de Schauensee, 1958), although it must be said that Chasen (1935b) included the island as a separate unit in his excellent list of Malaysian birds, so that from his work a faunal list can be constructed. Chasen listed 109 species, a number that was increased to 126 by de Schauensee. De Schauensee also presented a short historical review of ornithological exploration of the island: although, as mentioned above, ornithological collectors have neglected it, nevertheless, ornithologists and, more frequently, interested amateurs have, more by acci• dent than by design from the ornithological viewpoint, worked there from time to time, and have accumulated a larger body of material and knowledge than is visible from the literature. Almost from the moment of its publication, I became aware that de Schauensee's paper is not at all a comprehensive collation of extant knowledge. The fact that he has made no attempt to make enquiries in Leiden is perhaps understandable, but it is a pity that he failed to include material in the U. S. National Museum, Washington, D. C., the existence of which was known to him, as this would have made his paper much more complete. More serious is that de Schauensee has included a number of species which I am convinced do not occur on Bangka. This will be dealt with in a later section. The need to put the record straight before these erroneous records become en• trenched in literature, has been my main incentive in writing the present paper. The matter is now urgent, as an authoritative list of the birds of Sumatra (which will include its surrounding islands) is in an advanced state of preparation, and is to be published in the series of BOU check-lists. This paper ought to have been written a century ago, or at the very last 75 years ago. I realize that it is thoroughly old-fashioned, but nevertheless no apology is needed for its publication: the study of any avifauna needs a basis and in the case of Bangka such a basis has hitherto been manifestly lacking. Therefore I consider it, even now, useful to provide one, and seen in this light it is perhaps no disadvantage that all collections from Bangka were brought together over a comparatively short period (1859-1905), as renewed investiga• tions may show up changes that have taken place in the intervening years. ACKNOWLEDGEMENTS It is a pleasant duty to record my indebtedness for information and loans, always generously provided, to the following persons: P. Colston (British Museum (Natural History), Tring); Miss C. T. Fisher (Merseyside County Museum, Liverpool); I. C. J. Galbraith (British Museum (Natural History), Tring); F. B. Gill and M. Robbins (Academy of Natural Sciences, MEES: BIRDS FROM BANGKA 5 Philadelphia); Chr. Jouanin (Muséum National d'Histoire Naturelle, Paris); Mrs. M. K. LeCroy (American Museum of Natural History, New York); G. Mauersberger (Zoologisches Museum, Berlin); E. A. P. de Raadt ('sGravenhage); P. Rampelt and J. H. Reichholf (Zoologische Staatssammlung, München); C. S. Roselaar (Zoologisch Museum, Amsterdam); R. Siebelhoff (Scarborough College, University of Toronto, West Hill, Ontario); S. Somadikarta (Museum Zoologicum, Bogor); C. Violani (Dipartimento di Biologia Animale, Université di Pavia, Pavia); Κ. H. Voous (Huizen, Ν. H.); G. Ε. Watson (National Museum of Natural History, Washington, D.C.); D. R. Wells (Jabatan Zoologi, Universiti Malaya, Kuala Lumpur); Mrs. Yang Chang Man (Zoological Reference Collection, Singapore); R. L. Zusi and S. L. Olson (National Museum of Natural History, Washington, D. C). Biographical particulars were moreover received from: Gemeente Archief Driebergen Rijsenburg; Centraal Bureau voor Genealogie ('sGravenhage); Kanselarij der Nederlandse Orden ('sGravenhage). TOPOGRAPHY The island of Bangka, situated roughly between 1°10' and3°10'S, 105°10' and 106°50'E, is more or less dumbbellshaped, with its longest axis directed NWSE. The total surface of the island is 11,340 km2, its greatest length, along the axis just mentioned, is 245 km, its greatest width in the northern part is ca. 130 km, in the southern part ca. 70 km, whereas across the nar rowest part of its waist, it is no more than 35 to 40 km. The north coast is deeply indented by the shallow Klabat Bay, which penetrates almost 40 km in land. Bangka is separated from Sumatra by the shallow Strait Bangka, which at its narrowest point is no more than 14 km wide and less than 20 m deep. To the east, the somewhat smaller island of Billiton (4595 km2) is almost ex actly 100 km away, but this distance is decreased by several smaller islands, the major ones of which (P. Lepar, Liât, Mendanau) reduce it to several water gaps, the largest one of which is no more than 30 km wide and moreover is spotted with very small islands. The main part of Bangka consists of undulating hills, in several places rising to low granite mountains, the most important of which are Menoembing near Munt ok (448 m), the Mangol or Mangkol Mountains (398 m), Permisan (457 m), Pading/Bebuluh (654 m), and the highest peak, Maras (692 m). Swampy areas are mainly found in the southwestern part of the island. Especially off the southeast coast, there is a large number of satellite islands of assorted sizes. The largest are Lepar (207 km2) and Poengoh or Liât (50 km2). Geologically, Bangka as well as Billiton and the Riouw and Lingga Ar chipelagoes, are quite different from the adjacent parts of Sumatra: apparent ly mainly Trias (Rutten, 1927), whereas the eastern Sumatran lowlands are en tirely Quaternary. Therefore Parrot (1907: 152) had some reason to refer to 6 ZOOLOGISCHE VERHANDELINGEN 232 (1986) Fig. 1. — The position of Bangka is relation to the surrounding islands. The dotted line indicates the 20 m isobath. MEES: BIRDS FROM BANGKA 7 Bangka (and Billiton) as: "ein Relikt aus uralter Zeit". The geological struc• ture of a country would only indirectly influence the composition of its avi• fauna, through its vegetation. Although the time factor would have allowed the development of endemism on Bangka and Billiton, their proximity to Sumatra and Borneo and their position on the Sunda Shelf has evidently prevented this. The rainfall averages about 3000 mm a year, with a peak in December/January and a minimum in the period July/September. The natural vegetation under such conditions would be tropical rain forest but the extent of human activities has been such that little original vegetation remains and even those parts of the island that are not directly cultivated are covered with secondary vegetation. In 1905, the year of Hagen's visit which terminated the ornithological ex• ploration of the island, the human population was 115,000. In other words, the population density was a very moderate one of a trifle over 10 souls per km2. In 1956 the population was recorded as 205,363, and in 1968 as ca. 223,000. Zoogeographically important is the fact that, in spite of the proximity of Bangka to Sumatra, the distance separating the mountains or hills of Bangka from the higher ground of Sumatra, is actually greater than the distance separating them from the higher ground of Billiton, or even than the distance separating the latter from the hilly country of south-western Borneo. This may explain the presence of several Bornean subspecies on Bangka. ORNITHOLOGICAL HISTORY The first ornithologist to visit Bangka was Pierre Diard (1795-1863), who in April 1825 accompanied a Mr. van Sevenhoven on a tour of inspection of the tin mines. He is supposed to have collected birds, and to have sent these to Paris (cf. Finsch, 1906: 303-304; de Schauensee, 1958: 280). As his collec• tions would have been the first ever made on Bangka and therefore would, if nothing else, at least be of historical interest, I asked Dr. Jouanin to see whether any of his material was still present in the Muséum National.