279 INTRODUCTION This report includes taxonomic and nomen- clatural changes adopted by the Dutch committee for avian systematics (Commissie Systematiek Nederlandse Avifauna, CSNA) since Sangster et al. (1999). We review newly published evidence affecting the scientific names of taxa on the Dutch list. The committee consists of four members (year of election between parentheses): Arnoud B. van den Berg (1995), André J. van Loon (2002), C.S. Roselaar (1995) and George Sangster (Secretary, 1996). C.J. Hazevoet and Ronald Sluys were members of CSNA in 1996-2000 and 1998-2002, respectively, and participated in dis- cussions on a number of changes. The commit- tee’s approach towards the recognition of species and higher taxa has been described by Sangster et al. (1999). Unless otherwise stated, the sequence of species on the Dutch list remains unchanged. TAXONOMIC CHANGES Alopochen aegyptiaca Egyptian Goose Nijlgans The name Chen is masculine as well as femi- nine (Liddell & Scott 1996 in David & Gosselin Report of the Committee for Avian Systematics DUTCH AVIFAUNALLIST: TAXONOMIC CHANGES IN 1999-2003 GEORGE SANGSTER 1 , ARNOUD B. VAN DEN BERG 2 , ANDRÉ J. VAN LOON 3 & C.S. ROSELAAR 4 Sangster G., A.B. van den Berg, A.J. van Loon & C.S. Roselaar 2003. Dutch avifaunal list: taxonomic changes in 1999-2003. Ardea 91(2): 279-286. This is the second update on the taxonomy of species and higher taxa on the Dutch List since Voous (1977). It summarizes decisions made by the Commissie Systematiek Nederlandse Avifauna (CSNA) between Jan 1999 and Okt 2003. Changes in this report fall into five categories: (1) eight species names are changed to make them grammatically correct (Alopo- chen aegyptiaca, Pluvialis dominica, Actitis macularius, Phalaropus fuli- carius, Chlidonias hybrida, Delichon urbicum, Saxicola maurus, Regulus ignicapilla); (2) two species names are changed due to re-identification of type specimens (Phylloscopus ibericus, Lanius isabellinus); (3) six species become monotypic due to the recognition of extralimital taxa as species (Milvus milvus, Aquila pomarina, Larus cachinnans, Sylvia nana, Sylvia Hortensis, Ficedula parva); (4) two species become polytypic due to the inclusion of taxa previously separated as species (Larus fuscus, Acroce- phalus scirpaceus); (5) ten scientific names of species are changed due to generic revisions (Anas strepera, A. falcata, A. penelope, A. americana, Phalacrocorax pygmeus, P. aristotelis, Grus virgo, Calidris himantopus, Bubo scandiacus, Emberiza calandra). Key words: systematics – taxonomy – phylogeny – species – higher taxa 1 Stevenshof 17, 2312 GM Leiden, Netherlands; E-mail: g.sangster @plan- et.nl; 2 Duinlustparkweg 98, 2082 EG Santpoort-Zuid, Netherlands; 3 Kastelenstraat 45-2, 1083 CB Amsterdam, Netherlands; 4 Instituuut voor Biodiversiteit en Ecosysteem Dynamica, Zoological Museum, University of Amsterdam, P.O. Box 94766, 1090 GT Amsterdam, Netherlands