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Journal Publications

Scientific Publications

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A129. Bersacola E, Svensson MS, Bearder SK, Mills M, Nijman V (2014) Hunted in Angola: surveying the bushmeat trade.
Swara (Jan-Mar): 31-36.
A128. Shepherd CR, Nijman V (2014). Otters in the Mong La wildlife market, with a first record of hairy-nosed otter
Lutra sumatrana in trade in Myanmar. IUCN Otter Specialist Group Bulletin 31: 31-33.
A127. Aliabadian M, Nijman V, Mahmoudi A, Naderi M, Vonk R, Vences M (2014). Excalibar: a simple and fast software utility to calculate intra- and interspecific distances from DNA barcodes.
Contributions to Zoology 83: 79-83.
A126. Svensson MS, Bersacola E, Bearder SK, Nijman V, Mills M (2014). Open sale of elephant ivory in Luanda, Angola.
Oryx 48: 13-14.

A125. Aliabadian M., Beentjes KK, Roselaar CS, Nijman V, Vonk R (2013). DNA barcoding of Dutch birds. ZooKeys 365: article 25.
A124. Pachuau SV, Qureshi Q, Habib B, Nijman V (2013). Habitat use and documentation of a historic decline of western hoolock gibbon (
Hoolock hoolock) in Dampa Tiger Reserve, Mizoram, India. Primate Conservation 27: 85-90.
A123. Nijman V, Aliabadian M (2013). DNA barcoding as a tool for elucidating species delineation in wide-ranging species as illustrated by owls (Tytonidae and Strigidae). Zoological Science 30: 1005-1009.
A122. Yamaguchi N, Driscoll CA, Werdelin L, Abramov AV, Csorba G, Cuisin J, Fernholm B, Hiermeier M, Hills D, Hunter L, Itakura H, Johansson US, Kascheev V, Krohmann K, Martin T, Nowak-Kemp M, Pavlinov IY, Renoud F, Tomsett L, van der Mije S, Zholnerovskaya E, Groves C, Kitchener AC, Nijman V, Macdonald DW (2013) Locating specimens of extinct tiger (Panthera tigris) subspecies: Javan tiger (P. t. sondaica), Balinese tiger (P. t. balica), and Caspian tiger (P. t. virgata), including previously unpublished specimens. Mammal Study 38: 187–198
A121. Nekaris KAI, Campbell N, Coggins TG, Rode EJ, Nijman V (2013). Tickled to Death: Analysing public perceptions of ‘cute’ videos of threatened species (slow lorises–Nycticebus spp.) on Web 2.0 sites. PLoS One, 8(7), e69215
Neilson E, Nijman V, Nekaris KAI (2013). Conservation assessments of arboreal mammals in difficult terrain: occupancy modeling of pileated gibbons (Hylobates pileatus). International Journal of Primatology 34: 823-835.
A119. Nekaris KAI, Boulton A, Nijman V. (2013). An ethnoprimatological approach to assessing levels of tolerance between human and commensal non-human primates in Sri Lanka.
Journal of Anthropological Sciences 91: 1-14.
A118. Regmi GR, Nekaris KAI, Kandel K, Nijman, V. (2013). Crop-raiding macaques: predictions, patterns and perceptions from Langtang National Park, Nepal. Endangered Species Research 20: 217-226
A117. Akers AA, Islam MA, Nijman V. (2013). Habitat characterization of western hoolock gibbons Hoolock hoolock by examining home range microhabitat use. Primates (preprint).
A116. Gholamhosseini A, Vardakis M, Aliabadian M, Nijman V, Vonk R. (2013). Hybridization between sister taxa versus non-sister taxa: a case study in birds. Bird Study (preprint).

A115. Nijman V, Nekaris KAI (2012). Loud calls, startle behaviour, social organisation and predator avoidance in arboreal langurs (Cercopithecidae: Presbytis). Folia Primatologica 83: 274-287.
A114. Veríssimo D, Challender DWS, Nijman V. 2012. Wildlife trade in Asia: start with the consumer. Asian Journal of Conservation Biology 1: 49-50.
A113. Nijman V 2012. Authorship: Call for clear policy on deceased authors.
Nature 488: 281.
A112. Nijman V 2012. Marine turtles trade at Pangandaran, South Java. TRAFFIC Bulletin 24: 49-50.
A111. Aliabadian M, Kaboli M, Förschler MI, Nijman V, Chamani A, Tillier A, Prodon R, Pasquet E, Ericson PGP, Zuccon D. 2012. Convergent evolution of morphological and ecological traits in the open-habitat chat complex (Aves, Muscicapidae: Saxicolinae).
Molecular Phylogenetics and Evolution 65: 35-45.
A110. Aliabadian M, Kaboli M, Förschler MI, Nijman V, Chamani A, Tillier A, Prodon R, Pasquet E, Ericson PGP, Zuccon D. 2012. Erratum to: Convergent evolution of morphological and ecological traits in the open-habitat chat complex (Aves, Muscicapidae: Saxicolinae).
Molecular Phylogenetics and Evolution 65: 1017-1019.
A109. Nijman V, Shepherd CR. 2012. The role of Lao PDR in the ivory trade.
TRAFFIC Bulletin 24: 35-40.
A108. Nijman V. 2012. Purple-faced langurs in human-modified environments feeding on cultivated fruits: A comment to Dela (2007, 2012).
International Journal of Primatology 33: 743-748.
A107. Nijman V, Nekaris KAI, Bickford DP 2012. Small species at risk from Asian medicine.
Nature 481: 265
A106. Nijman V, Shepherd CR, Mumpuni, Saunders KL 2012. Over-exploitation and illegal trade of reptiles in Indonesia. Herpetological Journal 22: 83–89.
Nijman V, Shepherd CR 2012. China’s role in ivory and elephant parts trade from Lao PDR. Oryx 46: 172-173
A104. Stark DJ, Nijman V, Lhota S, Robins JG, Goossens B 2012 Modeling population viability of local proboscis monkey Nasalis larvatus populations: conservation implications. Endangered Species Research 16: 31–43.

A103. Nijman V, Shepherd CR 2011. Open trade in Kaizer's spotted newt in Southeast Asia. Oryx 45: 472-473.
A102. Nijman V, Heuts BA 2011. Aggression and dominance in cichlids in resident-intruder tests: the role of environmental enrichment.
Neotropical Ichtyology (3): 543-545
A101. Fam SD, Nijman V 2011.
Spizaetus hawk-eagles as predators of arboreal colobines. Primates 52(2): 105-110. Supplementary Online Material
Nekaris KAI, Nijman V, Godfrey LR 2011. Anthropology: follow field primatologists. Nature 471: 448.
Nijman V, Shepherd CR 2011. The role of Thailand in the international trade in live CITES-listed reptiles and amphibians. PLoS One 6(3): e17825.
A98. Nijman V, Nekaris KAI, Donati G, Bruford M, Fa J, 2011. Primate Conservation: Measuring and mitigating trade in primates.
Endangered Species Research 13: 159-161
A97. Bickford D, Phelps J, Webb EL, Nijman V, Sodhi NS (2011). Boosting CITES through research – response.
Science 331: 857-858.

A96.Phelps J, Webb EL, Bickford D, Nijman V, Sodhi NS 2010. Boosting CITES. Science 330: 1752-1753 Supplementary Online Material
A95. Rood E, Gani AA, Nijman V. 2010. Using presence only models to predict elephant habitat suitability in a disturbed environment: implications for conservation. Diversity and Distributions 16: 975-984.
A94. Nijman V, Nekaris KAI 2010. Testing a model for predicting primate crop-raiding using crop- and farm-specific risk values. Applied Animal Behaviour Science 127: 125–129
A 93. Meijaard E, Welsh A, Ancrenaz M, Nijman V, Wich SA, Marshall AJ. 2010. Orangutan encounter rates from Wallace to the present suggest the species was once more abundant. PLoS One 5(8): e12042

A92. Nekaris KAI, Starr CR, Shepherd CR, Nijman V 2010. Revealing culturally-specific patterns in wildlife trade via an ethnoprimatological approach: a case study of slender and slow lorises (Loris and Nycticebus) in South and Southeast Asia. American Journal of Primatology 72: 877-886.

A91. Nijman V, Nekaris KAI. 2010. Checkerboard patterns, interspecific competition and extinction: lessons from distribution patterns of tarsiers and slow lorises in insular Southeast Asia. International Journal of Primatology (6): 1147-1160.
A90. Hodgekiss S, Thetford E, Waitt CD, Nijman V. 2010. Female reproductive parameters in the Javan gibbon (Hylobates moloch). Zoo Biology 29: 449-456.
A89. Hamard M, Cheyne S, Nijman V. Vegetation correlates of gibbon density in the peat-swamp forest of the Sabangau catchment, Central Kalimantan, Indonesia.
American Journal of Primatology 27: 607-616.
A 88. Nijman V, Shepherd CR. 2010. The role of Asia in the global trade in CITES II-listed poison arrow frogs: hopping from Kazakhstan to Lebanon to Thailand and beyond. Biodiversity and Conservation 19: 1963-1970.
A87. Nijman V. 2010. An overview of the international wildlife trade from Southeast Asia.
Biodiversity and Conservation 19: 1101-1114.
A86. Nijman V, Nekaris KAI. 2010. Changes in levels of tolerance towards commensal primates in relation to deforestation in Sri Lanka. International
Journal of Pest Management 56(2): 153-158
A85. Nijman V, Aliabadian M, Roselaar CS. 2010. Hybrid lesser and greater white fronted geese from the western migratory flyway.
Zoologischer Anzeiger 248(2): 265-271
A84. Nijman V, Aliabadian M. 2010. Performance of distance-based DNA barcoding in the molecular identification of Primates. Comptes Rendus Biologies 33: 11-16
A80. Nijman V 2010. The importance of small Wetlands for the conservation of the endemic Caribbean Coot Fulica caribaea. Caribbean Journal of Science 46(1): 112-115

A83. Prins TG, Reuter H, Debrot AO, Wattel J, Nijman V. 2009. Checklist of the birds of Aruba, Curacao and Bonaire, South Caribbean. Ardea 97(2): i-iii, 137-268.
A82. Nijman V, Yang Martinez, C, Shepherd CR. 2009. Saved from trade: Donated and confiscated gibbons in zoos and rescue centres in Indonesia.
Endangered Species Research 9(2): 151-157.
A81. Maldanado A, Nijman V, Bearder SK. 2009. Trade in night monkeys
Aotus spp. in the Brazil-Colombia-Peru tri-border area: international wildlife trade regulations are ineffectively enforced. Endangered Species Research 9(2): 143-149.
Nijman V, Booij J, Flikweert M, Aliabadian M, de Freitas JA, Vonk R, Prins TG. 2009. Habitat use of raptors in response to anthropogenic land use on Bonaire and Curaçao, Netherlands Antilles. Caribbean Journal of Science 45(1): 25-29.
A78. Thorn J, Smith D, Nijman V, Nekaris KAI. 2009. Ecological niche modelling as a technique for assessing threats and setting conservation priorities for Asian slow lorises (Primates: Nycticebus). Diversity and Distributions (3): 289-298.
A77. Aliabadian A, Kaboli M, Nijman V, Vences M. 2009. Molecular identification of birds: performance of distance-based DNA barcoding in three genes to delimit closely related species.
PLoS ONE 4(1): e4119
A76. Nijman V, Shepherd CR, van Balen S. 2009. Declaration of the Javan hawk-eagle as Indonesia's National Rare Animal impedes conservation of the species.
Oryx 43(1): 122-128.

Nekaris KAI, Nijman V. 2008. Attention to Sri Lankan monkey paints a bleak picture yet gives glimmer of hope. Oryx 42(4): 487-488
A74. Nijman V, van Balen S. 2008. New hope for possibly not yet extinct Javan bird. Oryx 42(4): [no pdfs]
A73. Nijman V, Vonk R. 2008. Blurring the picture: introductions, invasions, extinctions - biogeography in a global world. Contributions to Zoology. 77(2): 67-70.
A72. Aliabadian A, Roselaar CS, Sluys R,
Nijman V. 2008. Species diversity and endemism: testing the mid-domain effect on species richness patterns of songbirds in the Palearctic Region. Contributions to Zoology. 77(2): 90-108.
A71. Jaffe S, Nijman V. 2008. Progress, prospects and pitfalls in primate biogeography. Contributions to Zoology. 77(2): 135-138.
A70. Nijman V, Meijaard E. 2008.
Zoogeography of primates in insular Southeast Asia: species-area relationships and the effects of taxonomy. Contributions to Zoology. 77(2): 117-126.
A69. Parker L, Nijman V, Nekaris KAI. 2008. When there is no forest left: fragmentation, local extinction, and small population sizes in the Sri Lankan western purple-faced langur. Endangered Species Research. 5(1): 29-36.
A68. Gomes L, Oostra V, Nijman V, Cleef A, Kappelle M. 2008. Tolerance of frugivorous birds to habitat disturbance in a tropical cloud forest. Biological Conservation. 141: 860-871.
A67. Nekaris KAI, Blackham G, Nijman V. 2008. Conservation implications of low encounter rates of five nocturnal primates species (
Nycticebus sp.) in Southeast Asia. Biodiversity and Conservation. (4): 733-747 [preprints only]
Hulsman H, Vonk R, Aliabadian M, Debrot AO, Nijman V. 2008. Effect of introduced species and habitat alteration on the occurrence and distribution of euryhaline fishes in fresh- and brackish-water habitats on Aruba, Bonaire and Curacao (South Caribbean). Contributions to Zoology. 77(1): 41-47.
A65. Oostra V, Gomes L, Nijman V. 2008. Effects of deforestation on the abundance of restricted-range bird species in a Costa Rican cloud forest. Bird Conservation International. 18: 11-19.
A64. Nijman V, Aliabadian M, Debrot AO, de Freitas JA, Gomes L, Prins TG, Vonk R. 2008. Conservation status of Caribbean coot Fulica caribaea in the Netherlands Antilles, and other parts of the Caribbean.
Endangered Species Research. 4: 241-246.
A63. Shepherd CR, Nijman, V. 2008. Trade in bear parts from Myanmar: an illustration of the in-effectiveness of enforcement of international wildlife trade regulations.
Biodiversity and Conservation. 17(1): 35-42.

A128. Shepherd CR, Nijman V. 2007. An assessment of wildlife trade at Mong La market on the Myanmar-China border.
TRAFFIC Bulletin 21 :85–88
A62. Nijman V. 2007. Effects of vocal behaviour on estimating abundance in rainforest animals.
Acta Ornithologica. 42(2): 186-190.
A61. Vonk R, Nijman V. 2007.
Contributions to Zoology, the Journal - diversity in research topics and changes over the last 27 years. Contributions to Zoology. 76(4): 281-283.
A60. Aliabadian A, Roselaar CS, Sluys R,
Nijman V. 2007. Low predictive power of the Mid-Domain Effect to explain species richness patterns of Palearctic songbirds. Contributions to Zoology (3): 197-204.
A59. Nijman V, Shepherd CR. 2007. Trade in non-native, CITES-listed, wildlife in Asia, as exemplified by the trade in freshwater turtles and tortoises (Chelonidae) in Thailand.
Contributions to Zoology. 76(3): 207-211.
A58. van Balen S, Nijman V. 2007. New information on the Critically Endangered Javan lapwing
Vanellus macropterus, based mainly on unpublished notes by August Spennemann (ca 1878-1945). Bird Conservation International. 17(3): 225-233.
A57. Flikweert M, de Freitas JA, Prins TG, Nijman V. 2007.
Spatial variation in the diet of the barn owl in the Caribbean. Ardea 95(1): 75-82
A56. Barnett R, Yamaguchi N, Shapiro B, Nijman V. 2007. Using ancient DNA techniques to identify the origin of unprovenanced museum specimens, as illustrated by the identification of a 19th century lion from Amsterdam. Contributions to Zoology 76(2): 87-94.
A55. Nekaris KAI, Nijman V. 2007. CITES proposal highlights rarity of Asian nocturnal primates (
Lorisidae: Nycticebus). Folia Primatologica 78(3): 211-214.
A54. Aliabadian A, Kaboli M, Prodon R, Nijman V, Vences M. 2007. Phylogeny of Palearctic weatears (genus
Oenanthe) - congruence between morphometric and molecular data. Molecular Phylogenetics and Evolution. 42: 665-675.
A53. Aliabadian M, Kaboli M, Kiabi M, Nijman V. 2007. Contact- and hybrid zone hotspots and evolution of birds in the Middle East. Progress in Natural Science. 17 (9): 1114-1118.
A52. Aliabadian M, Nijman V. 2007. Avian hybrids: incidence and geographic distribution of hybridisation in birds.
Contributions to Zoology 76(1): 59-61.

A51. Nijman V. 2006. In-situ and ex-situ status of the Javan gibbon and the role of zoos in conservation of the species.
Contributions to Zoology. 75(3-4): 161-168.
A50. Vonk R, Nijman V. 2006. Sex ratio and sexual selection in wormshrimps (Crustacea, Amphipoda, Ingolfiellidea).
Contributions to Zoology. 75(3-4): 189-194
A49. Roselaar CS, Prins TG, Aliabadian A, Nijman V. 2006. Hybrids in divers (Gaviiformes).
Journal of Ornithology. (1): 24-30.
A48. Geissmann T, Nijman V. 2006. Calling of wild silvery gibbons (
Hylobates moloch) in Java (Indonesia): behavior, phylogeny and conservation. American Journal of Primatology. (1): 1-19.
A47. Nijman V. 2006. The endemic Bawean serpent-eagle Spilornis baweanus: habitat use, abundance, and conservation. Bird Conservation International. 16(2): 131-142.
A46. Nijman V, Germi F, van Balen S. 2006. Relative status of migrant sparrowhawks on Java and Bali, Indonesia. Emu 106(2): 157-162.

A45. Sözer R, Nijman V. 2005. Effects of ENSO-induced habitat disturbances on abundance and spatial distribution of an endangered riverine bird in Borneo.
Animal Conservation. 8(1): 27-31.
A44. Nijman V, Prins TG, Reuter H. 2005. Timing and abundance of migrant raptors on Bonaire, Netherlands Antilles.
Journal of Raptor Research. 30(1): 96-99 [proofs only]
A43. Alibadian A, Nijman V, Roselaar CS, Sluys R, Vences M. 2005. Secondary contact zones in Passerine birds in the Palearctic. Biology Letters. 1(1): 21-23
A42. Prins TG, Roselaar CS,
Nijman V. 2005. Status and breeding of Caribbean coot in the Netherlands Antilles. Waterbirds. 28(2): 145-148
A41. Prins TG,
Nijman V. 2005. Historic changes in the status of Caribbean coot in the Netherlands Antilles. Oryx 39(2): 125-126
A40. Nijman V. 2005. Rapid decline of Hose's langur in Kayan Mentarang National Park. Oryx. 39(2): 223-226. [proofs only]
A39. Nijman V
, Menken SBJ. 2005. Assessment of census techniques for estimating density and biomass of gibbons (Primates: Hylobatidae). The Raffles Bulletin of Zoology. 53(1): 201-211.
A38. Nijman V
, Fredriksson GM, Usher GF, Gönner C. 2005. Little black shag in East Kalimantan, Indonesia: first confirmation of the species' presence in Borneo in over 150 years. Waterbirds. 28(4): 516-518.
A37. Nijman V. 2005. Survey on birds of prey and owls (Falconiformes and Strigiformes) on Java Sea Islands: correction and additions. The Raffles Bulletin of Zoology. 53(2): 131-133.
A36. Meijaard E, van Balen S, Nijman V. 2005. Historic information on the status of the white-shouldered ibis Pseudibis davisoni in Indonesian Borneo. The Raffles Bulletin of Zoology. 53(2) 277-279.

A35. Nijman V. 2004 Timing and magnitude of migrant raptors in Central Java, Indonesia.
Ardea 92(2): 161-168.
A34. Nijman, V. 2004. Survey on birds of prey and owls (Falconiformes and Strigiformes) on Bawean, Java Sea, with records of three species new to the island.
The Raffles Bulletin of Zoology. 52(2):647-651.
A33. Nijman, V. 2004. Effects of habitat disturbance and hunting on the densities and biomass of the endemic Hose's leaf monkey
Presbytis hosei (Thomas 1889) (Mammalia: Primates: Cercopithecidae) in east Borneo. Contributions to Zoology. 73: 283-291. [no pdf]
A32. Van Balen, S. Nijman V. 2004. Biology and conservation of the Pink-headed Fruit-dove
Ptilinopus porphyreus. Bird Conservation International 14: 141-154.
A31. Fredriksson, G.M., Nijman, V. 2004. Habitat use and conservation of two elusive groundbirds (
Carpococcyx radiatus and Polyplectron schleiermacheri) in the Sungai Wain Protection Forest, East Borneo. Oryx. 297-303.
A30. Nijman, V. 2004. Seasonal variation in naturally occurring mobbing behaviour of drongos (
Dicruridae) towards two avian predators. Ethology Ecology and Evolution. 16(1): 25-32.
A29. Nijman, V. 2004. Conservation of the Javan gibbon
Hylobates moloch: population estimates, local extinctions, and conservation priorities. The Raffles Bulletin of Zoology. 52(1): 271-280.
A28. Nijman V. 2004. Habitat segregation in two congeric hawk-eagles (
Spizaetus bartelsi and S. cirrhatus) in Java, Indonesia. Journal of Tropical Ecology. 20(1): 105-111.

A27. Lammertink, M., Nijman, V. Setiorini, U. 2003. Habitat use, Red List status and conservation of the endemic Natuna leaf monkey (
Presbytis natunae) on Bunguran Island, Indonesia. Oryx. 37: 472-479.
A26. Meijaard E, Nijman V. 2003. Primate hotspots on Borneo: Predictive value for general biodiversity and the effects of taxonomy.
Conservation Biology. 17 (3): 725-732.
A25. Nijman V. 2003. Distribution, habitat use and conservation of the endemic Chestnut-bellied Hill-partridge (
Arborophila javanica) in fragmented forests of Java, Indonesia. Emu. 103 (2): 133-140.
A24. Nijman, V, van Balen, S. 2003. Wandering stars: age-related habitat use and dispersal of Javan Hawk-eagles (
Spizaetus bartelsi). Journal für Ornithologie. 144: 451-458.

A23. Van Balen S, Nijman V, Sözer R. 2001. Conservation of the endemic Javan hawk-eagle
Spizaetus bartelsi Stresemann, 1924 (Aves : Falconiformes): density, age-structure and population numbers. Contributions to Zoology. 70(3): 161-173. [no pdf]
A22. Nijman V. 2001. Spatial and temporal variation in migrant raptors on Java, Indonesia. Emu 101(3): 259-263.
A21. Nijman V. 2001. Autumn migration of raptors on Java, Indonesia: composition, direction and behaviour.
Ibis 143(1): 99-106.

A20. Van Balen S, Nijman V, Prins HHT. 2000. The Javan hawk-eagle: misconceptions about rareness and threat.
Biological Conservation. 96(3): 297-304.
A19. Meijaard E, Nijman V. 2000. The local extinction of the proboscis monkeys Nasalis larvatus in Pulau Kaget Nature Reserve, Indonesia. Oryx 33: 66-70.
A18. Nijman, V. 2000. Geographical distribution of ebony leaf monkey
Trachypithcus auratus (Geoffroy Saint Hilaire 1812) (Mammalia: Primates: Cercopthecidae). Contributions to Zoology. 69: 157-177. [no pdf]
A17. Nijman V, van Balen S, Sozer R. 2000. Breeding biology of Javan Hawk-eagle
Spizaetus bartelsi in West Java, Indonesia. Emu 100: 125-132.
A16. Nijman V, Heuts BA. 2000. Effect of environmental enrichment upon resource holding power in fish in prior residence situations.
Behavioural Processes. 49: 77-83.
A15. Meijaard E, Nijman V. 1999. Distribution and conservation of the proboscis monkey
Nasalis larvatus in Kalimantan, Indonesia. Biological Conservation. 92: 15-24.

A14. Van Balen S, Sozer R, Nijman V, Meijaard E, Dennis R, Jepson P. 1999. Juvenile plumage of Javan Crested Honey Buzzard, with comments on mimicry in south-eastern Asian
Pernis and Spizaetus. Dutch Birding 21: 192-198.
A13. Van Balen S, Nijman V, Sozer R. 1999. Distribution and conservation of the Javan Hawk-eagle
Spizaetus bartelsi. Bird Conservation International 9: 333-349.

A12. Nijman V. 1998. Habitat preferences of Great argus pheasant Argusianus argus in Kayan Mentarang National Park, East Kalimantan, Indonesia. Journal fur Ornithologie. 139: 313-323.
A11. Nijman V, van Balen S. 1998. A faunal survey of the Dieng mountains, Central Java, Indonesia: status and distribution of endemic primate taxa.
Oryx. 32: 145-156.
A10. Heuts BA, Nijman V. 1998. Aggressive behaviour of two swordtail colour breeds (
Xiphophorus, Poeciliidae) in a prior residence situation. Behavioural Processes. 43: 251-255.

A9. Nijman V, Sözer R. 1997. Field identification of the Javan Hawk Eagle
Spizaetus bartelsi. Forktail. 14: 13-16.
A8. Nijman V. 1997. On the occurrence and distribution of
Presbytis comata (Desmarest 1822) (Mammalia: Primates: Cercopthecidae) on Java, Indonesia. Contributions to Zoology. 66: 247-256. [no pdf]
A7. Nijman V. 1997. Geographical variation in pelage characteristics in
Presbytis comata (Desmarest 1822) (Mammalia: Primates: Cercopthecidae). Zeitschrift fur Saugetierkunde. 62: 257-264. [no pdf]

A6. Van Balen S, Nijman V. 1996. Notes on the breeding biology of the Crested Jay Platylopus galericulatus. Bulletin British Ornitologists' Club. 116: 173-174. [no pdf]
A5. Nijman V, Sozer R. 1996. New information on the distribution of Chestnut-bellied partridge
Arborophila javanica in the central parts of Java. Bird Conservation International. 7: 27-33.
A4. Nijman V, Sozer R. 1996. Sexual dimorphism in the Javan Hawk-eagle.
Bulletin British Ornitologists' Club. 117: 251-253. [no pdf]

A3. Nijman V. 1995. Remarks on the occurrence of gibbons in Central Java. Primate Conservation. 16: 66-67.
A2. Nijman V, Sozer R. 1995. Recent observations of the Grizzled leaf monkey (
Presbytis comata) and an extension of the range of the Javan gibbon (Hylobates moloch) in Central Java. Tropical Biodiversity. 3: 45-48. [no pdf]
A1. Sozer R, Nijman V. 1995. The Javan Hawk-eagle: new information on its distribution in Central Java and notes on its threats.
Tropical Biodiversity. 3: 49-55. [no pdf]

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