In addition to hummingbirds, other bird species are also common pollinators outside of North America. In the eastern hemisphere, honeyeaters (Family: Meliphagidae), sunbirds, and sugarbirds (Family: Nectariniidae) pollinate many different flowering plants. Honeyeaters are a large family of birds that live predominantly in Australasia. Sunbirds are small forest birds that live in the Old World tropics. Sunbirds usually perch to feed, although they can hover like hummingbirds. Honeyeaters and sunbirds look and behave similarly, but they are unrelated. However, both do have a brush-tipped tongue that aids in collecting nectar -  their primary food source.

References: Honeyeaters: Meliphagidae (In: Robson, D., 2003, Bird Families of the World), Nectariniidae: Sunbirds, Flowerpeckers & Spiderhunters (In: Birds and Birding in India, Copyright 2005-2007), and Sunbirds: Nectariniidae (In: JRank Free Encyclopedias, Animal Life Resources: Birds Scientific Reference--Vol. 5, Copyright 2007 Net Industries)