{"refrec":{"BRefID":109009,"RR":"<b>Kear, J.</b> (1991). Ducks of the world. Charles Letts: London. ISBN 1-85238-169-8. 216 pp.","BEntID":103720,"PublicFlag":1,"CheckedFlag":0,"wosflag":0,"vabbflag":0,"RefStringPartII":". Charles Letts: London. ISBN 1-85238-169-8. 216 pp.","DocTypID":5,"DocType":"Book/Monograph","MarineFlag":0,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Kear, J.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Kear, J.","Englishabstract":"Ducks can be divided into taxonomic groupings, or 'tribes' of species that look and behave alike. Some tribes consist of very closely related birds, others of more distantly related cousins. Taxonomy is still not a very exact science and, at times, positions are changed or reshuffled as further research suggests a better arrangement. 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