Elvira (genus)
Encyclopedia
Elvira is a genus of hummingbird
Hummingbird
Hummingbirds are birds that comprise the family Trochilidae. They are among the smallest of birds, most species measuring in the 7.5–13 cm range. Indeed, the smallest extant bird species is a hummingbird, the 5-cm Bee Hummingbird. They can hover in mid-air by rapidly flapping their wings...

s. It consists of two small species.
They are:
  • White-tailed Emerald
    White-tailed Emerald
    The White-Tailed Emerald is a species of hummingbird in the Trochilidae family.It is found in Costa Rica and Panama....

    , Elvira chionura
  • Coppery-headed Emerald
    Coppery-headed Emerald
    The Coppery-headed Emerald is a type of hummingbird. It is endemic to Costa Rica.The noticeably decurved bill sets it apart from similar White-tailed Emerald ....

    , Elvira cupreiceps

Coppery-headed Emerald is endemic to Costa Rica
Costa Rica
Costa Rica , officially the Republic of Costa Rica is a multilingual, multiethnic and multicultural country in Central America, bordered by Nicaragua to the north, Panama to the southeast, the Pacific Ocean to the west and the Caribbean Sea to the east....

, but White-tailed Emerald also breeds in neighbouring Panama
Panama
Panama , officially the Republic of Panama , is the southernmost country of Central America. Situated on the isthmus connecting North and South America, it is bordered by Costa Rica to the northwest, Colombia to the southeast, the Caribbean Sea to the north and the Pacific Ocean to the south. The...

.
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