Proboscis Bat

Rhynchonycteris naso

To avoid predators while roosting in the open on tree trunks, a colony will line up vertically and sway in unison, perfectly mimicking tree bark or lichen moving in the breeze.

Scientific name
Rhynchonycteris naso
Taxonomy
Animalia › Chordata › Mammalia › Chiroptera › Emballonuridae › Rhynchonycteris
IUCN Red List status
Least Concern
Population trend
stable
Biome
wetland
Habitat
Riparian forests, mangroves, swamps, and wetlands near slow-moving water.
Diet
Insectivorous, primarily feeding on midges, mosquitoes, and small flies over water.
Range
Belize, Brazil, Costa Rica, Ecuador, Mexico, Peru
Size
Wingspan of 22-25 cm; weight of 2-4 grams
Lifespan
3 to 6 years in the wild
Active
nocturnal
Threats
Habitat loss through deforestation of riparian corridors and water pollution.
Safe to approach?
This species is harmless and highly beneficial. If encountered roosting on a tree over water, maintain a safe distance of at least 5 meters and avoid sudden movements to prevent flushing them. Do not attempt to touch or handle them. In the extremely unlikely event of a scratch or bite, wash the wound thoroughly with soap and water and seek immediate medical attention due to general rabies risks associated with all wild bats.

The proboscis bat ( Rhynchonycteris naso ) is a bat species from South and Central America. Other common names include Long-nosed proboscis bat , sharp-nosed bat , Brazilian long-nosed bat and river bat in English, and murciélago narizón in Spanish. It is monotypic within its genus.

Photo: (c) Charles J. Sharp , some rights reserved (CC BY-SA), CC-BY-SA, via iNaturalist

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