Black-billed Flycatcher vs Chuuk Flying Fox

Aphanotriccus audax compared with Pteropus pelagicus

Key Differences

• Black-billed Flycatcher is Near Threatened while Chuuk Flying Fox is Endangered.

Taxonomic Classification

Rank	Black-billed Flycatcher	Chuuk Flying Fox
Kingdom same	Animalia (hayvan)	Animalia (hayvan)
Phylum same	Chordata (Kordalılar)	Chordata (Kordalılar)
Class	Aves (kuş)	Mammalia (memeliler)
Order	Passeriformes (Ötücü kuşlar)	Chiroptera (yarasa)
Family	Tyrannidae	Pteropodidae (Fruit Bats)
Genus	Aphanotriccus	Pteropus (Flying Foxes)
Species	Aphanotriccus audax	Pteropus pelagicus

Evolutionary Relationship

Black-billed Flycatcher and Chuuk Flying Fox share a common ancestor at the Phylum level: Chordata. (Kordalılar)

Conservation Status

Black-billed Flycatcher

NT — Near Threatened

Chuuk Flying Fox

EN — Endangered

Physical Characteristics

Attribute	Black-billed Flycatcher	Chuuk Flying Fox
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Black-billed Flycatcher

Habitat

Inhabits tropical and subtropical moist broadleaf forests and tropical and subtropical dry broadleaf forests within the Neotropic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Distributed across Colombia, Norway, and Panama. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

Chuuk Flying Fox

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Black-billed Flycatcher

The Black-billed Flycatcher (Aphanotriccus audax) is a species in the genus Aphanotriccus. It is currently classified as Near Threatened on the IUCN Red List. Inhabits tropical and subtropical moist broadleaf forests and tropical and subtropical dry broadleaf forests within the Neotropic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Chuuk Flying Fox

The Chuuk flying fox (Pteropus pelagicus) is a large fruit bat in the family Pteropodidae, endemic to Chuuk (Truk) Lagoon in the Federated States of Micronesia, central Pacific Ocean. It occupies forested islands within the lagoon, roosting in large trees and foraging nocturnally on ripe fruits, nectar, and flowers of native tropical vegetation. As one of the few native pollinators and seed dispersers on these small island ecosystems, the Chuuk flying fox plays an essential ecological role in maintaining forest regeneration. The species is classified as Endangered by the IUCN, primarily due to its extremely restricted range—confined to a small island group—and ongoing hunting pressure for bushmeat, which is traditional in parts of Micronesia. Habitat loss from typhoons, agricultural conversion, and human development further threatens its already limited habitat. Pteropus bats across the Pacific have faced severe declines from overhunting, with several island species now extinct. The Chuuk flying fox has a wingspan that can exceed one meter, and roosts colonially in forest canopy trees. International agreements and national legislation within the Federated States of Micronesia provide some protection, but enforcement remains challenging. Population surveys and community-based conservation programs are urgently needed to stabilize this species.