WTropicsWA Field Guide to the Birds of Hawaii and the Tropical PacificWAfrotropical realmWBay owlWTropical monsoon climateWTropical rainforest climateWTropical savanna climateWCool tropics paradoxWElevational diversity gradientWEquatorWNnewiWTropic of CancerWTropic of CapricornWTropical AfricaWTropical geographyWTropical nations at the Winter Olympics