IntroductionMap of Costa RicaAnatomical FeaturesGlossarySpecies Accounts and IllustrationsTinamousCurassows, Chachalacas, GuansNew World QuailSungrebeGrebesDucksCormorantsAnhingasPelicansFrigatebirdsBoobiesGulls, Terns, SkimmersSunbitternHerons, Egrets, BitternsIbises, SpoonbillsStorksLimpkinThick-kneesPlovers, LapwingsStilts, AvocetsSandpipers, AlliesJacanasRails, Crakes, GallinulesNew World VulturesOspreyHawks, Kites, EaglesFalcons, CaracarasOwlsPotoosOilbirdNightjars, AlliesSwiftsSwallowsHummingbirdsPigeons, DovesParrotsCuckoosTrogonsMotmotsKingfishersPuffbirdsJacamarsNew World BarbetsToucan-BarbetsToucansWoodpeckersOvenbirds, WoodcreepersTypical AntbirdsAntpittasAntthrushesTapaculosTyrant FlycatchersTityras, Becards, AlliesManakinsCotingasJays Thrushes, Allies Dippers Mockingbirds Silky-flycatchersGnatwrens, GnatcatchersWrensVireos New World WarblersTanagers, Seedeaters, AlliesFinches, New World Sparrows, Allies Grosbeaks, Buntings, Allies Blackbirds, Orioles Euphonias Species Index