1990-2 - Dutch Birding

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asian-pacifrc birds 59-60 Steppe Eagle Aquila nipalensis, first-winter, Sekinchan, Selangor, Peninsular Malaysia, 19-20 February 1987 (Andreas J Nelbig) 7 8 ~.r~
Large eagles with typical Aquifa jizz, substantially larger than accompanying Spotted Eagles A clanga. Long broad wings, rather parallel-edged . Body plumage and wingcoverts very pale beige-brown, contrasting sharply with dark brown remiges and rectri- asian-pacific birds ces . Grealer underwing-coverts formed clear broad white band along underside of wing . Thin white trailing edge to wing . Sharply defined white crescent across upperlail-coverts. While undertaii-coverts . Tail slightly wedge-shaped . Both Steppe Eagles were loosely associated with up to six Spotted Eagles (two adult, one subadult and three first- or second-winter birds) . They were decidedly less shy than the Spotted Eagles, which apparently had become wary of the illegal shooting regularly going on in this area. The Steppe Eagle on 1 February scavenged on a dead rat, successfully defending it against two Spotted Eagles . In March 1987, numbers in the Sekinchan area rose even further, perhaps due to some return passage trom areas further south . J M Thiollay (in litt) idenlified no less than seven Steppe Eagles on 5 March, including one full adult and five immatures . DRW saw one subadult on 8 March, which had limited white under the centre of the rump but still retained the broad white line on the underwing-coverts . Deforestation and recent changes in rice-cultivation patterns towards larger, more prairie-like fields in the Malay peninsula have resulted in an increase of available habitat for temperate-zone migrants wintering in open country . In Peninsular Malaysia, the Spotted Eagle is restricted as a regular winter visitor to the same ricegrowing area near Sekinchan, where up to 12 have been seen in recent years . Therefore, it is no coincidence that Steppe Eagles, which had been suspected to occur further southeast than Burma, where they are supposedly regular (Smythies 1986), did in fact show up in the Sekinchan area . Since the findings reported here, two new records indicate an even wideroccurrence and possible wintering of Steppe Eagles in tropical south-eastern Asia . An immature was pholographed in Singapore on 25 September 1987 and one was observed in Brunei, Borneo, in August 1989 (C F Mann in litt) . If accepted, both would be first records for the respective countries . reference Smythies . B A 1986 . Birds of Burma . Third edition . Edinburgh . Andreas J Helbig, Zoologisches Instituf, Johann Wolfgang Goethe- Universit~t Frankfurt am Main , Postfach 111932, 6000 Frankfurt am Main 11, FRG David R Wells, Department of Zoology, University of Malaya, 59 1 00 Kuala Lumpur. Malaysia Vocalixations and taxonomic status of Caprfmulgus celebeRsis The Sulawesian nightjar Caprimulgus celebensis Ogilvie-Grant 1894 is known from very few specimens and its vocalizations have not previously been described (Mees 1977, 1985, Marshall 1978) . It was included in one of three distinct subspecies groups of the Large-tailed Nightjar C macrurus Horsfield 1821 identified by Mees (1977) . These have since each been accorded species rank and celebensis was provisionally trealed as a well-marked subspecies of Phillppine manlllensis Walden 1875 79
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1990-2 - Dutch Birding

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