In 2001, it was suggested that A. prasinus, as traditionally defined, was a species complex that should be split into 7 different species based on preliminary morphological evidence.
There are 236 species of birds, among which one can observe Quetzal, Emerald Toucanet, Pájaro Campana (Procnias tricaruntulata), Chestnut-headed Oropendola (Psarocolius wagleri), and the national bird of Nicaragua, Turquoise-browed Motmot, Guardabarranco (Guardian of the stream).
Emerald | Emerald, Victoria | Glittering-bellied Emerald | Emerald Twilight | Common Emerald | Sapphire-spangled Emerald | Emerald Toucanet | Emerald, Queensland | Emerald City | Marti Emerald | Duke of Devonshire Emerald | Common Emerald Dove | Tawny-tufted Toucanet | Spot-billed Toucanet | Gould's Toucanet | Emerald Buddha | Caro Emerald | The Shocking Miss Emerald | HMS ''Emerald'' | Emerald Township, Faribault County, Minnesota | Emerald Township | Emerald Tablet | Emerald Downs | Emerald City (magazine) | Emerald ash borer | emerald | Common Emerald ''(Hemithea aestivaria)'' | 2008 Emerald Bowl | Versicoloured Emerald | The Wizard of the Emerald City |