Revision of the status of bird species occurring or reported in Colombia 2011 Revisión del estatus de las especies de aves que existen o han sido reportadas en Colombia 2011

following species are added to Colombia's bird checklist: Red-breasted Merganser Mergus serrator (photograph, San Andres & Providencia), Black Scoter Melanitta americana (sight record) and Kelp Gull Larus dominicanus (photographic record). A new subspecies of Common Bush-Tanager Chlorospingus flavopectus olsoni is recognized. Proposed splits are accepted of Oxypogon Helmetcrests into four species (three in Colombia), Lineated Woodcreeper Lepidocolaptes albolineatus into five species (one in Colombia), Curve-billed Scythebill Campylorhamphus procurvoides into three species (one in Colombia), Stipple-throated Antwren Epinecrophylla haematonota into at least three species (one in Colombia) and Sirystes into four species (two in Colombia). The Green-crowned Woodnymph T. fannyi is lumped back into Purple-crowned Woodnymph T. colombica. Dunlin Calidris alpina becomes a confirmed species (photograph) and Caribbean Coot Fulica caribaea is confirmed from mainland records (photograph). A possible vagrant record of Mallard Anas platyrhynchos is presented. Zebra Finch Taeniopygia guttata and Fischer's Lovebird Agapornis fischeri are new escaped species known only from sight records and Java Sparrow Lonchura oryzivora becomes confirmed as an escapee. Several amendments to genus and species names, English names and linear order are made, following recent publications. As a result of these changes, the Colombian checklist again increases in size, for the first time for any country, passing the landmark of 1900 species to 1903 (excluding escapes), of which 1831 are documented by 'confirmed' records on the mainland. The Kelp Gull is Colombia's 1900 th bird.