黑喉芒果蜂鳥 vs Common Silver Hairgrass

Anthracothorax nigricollis compared with Aira caryophyllea

Key Differences

黑喉芒果蜂鳥 is Least Concern while Common Silver Hairgrass is Endangered.

Taxonomic Classification

Rank	黑喉芒果蜂鳥	Common Silver Hairgrass
Kingdom	Animalia (动物界)	Plantae (植物)
Phylum	Chordata (脊索动物门)	Magnoliophyta (木兰植物门)
Class	Aves (鳥綱)	Liliopsida (百合纲)
Order	Apodiformes (雨燕目)	Poales (禾本目)
Family	Trochilidae	Poaceae (Grass Family)
Genus	Anthracothorax	Aira
Species	Anthracothorax nigricollis	Aira caryophyllea

Conservation Status

黑喉芒果蜂鳥

LC — Least Concern

Common Silver Hairgrass

EN — Endangered

Physical Characteristics

Attribute	黑喉芒果蜂鳥	Common Silver Hairgrass
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

黑喉芒果蜂鳥

Habitat

Typically found in various aerial, terrestrial, and aquatic environments.

Range

Distributed across Colombia, Ecuador, Norway, and Venezuela.

Common Silver Hairgrass

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical grasslands and savannas, and flooded grasslands and savannas, among 11 distinct biome types. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Africa (Cameroon), Asia (Japan, South Korea), Europe (6 countries), North America (4 countries), Oceania and the Pacific (Australia), and South America (4 countries). Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

黑喉芒果蜂鳥

黑喉芒果蜂鸟（Anthracothorax nigricollis）是墨西哥南部至阿根廷热带森林中体型较大、颜色艳丽的蜂鸟。性二型显著，雄鸟具有闪亮的黑色喉部和胸部，配以紫绿色两侧和醒目的紫色尾羽，雌鸟腹面白色并有中央黑色纵纹。积极守卫开花树木，在新热带区广泛分布，被评定为无危物种。

Common Silver Hairgrass

<em>Aira caryophyllea</em>, commonly known as Common Silver Hairgrass, is a slender annual grass belonging to the family Poaceae within the order Poales. This delicate grass is currently classified as Endangered on the IUCN Red List, reflecting significant conservation concern despite its historically broad distribution. It is typically found across a remarkable diversity of biome types, including tropical and subtropical moist broadleaf forests, grasslands, savannas, and flooded habitats, demonstrating notable ecological versatility. Its geographic range spans multiple continents, with documented populations in Africa (Cameroon), Asia (Japan, South Korea), Europe, North America, Australia, and South America. As an annual grass, it completes its life cycle within a single growing season, reproducing via wind-dispersed seeds. The inflorescence typically bears silvery, shimmering spikelets that give the species its common name. Biological traits such as average lifespan, body dimensions, and dietary specifics follow typical patterns for annual grasses — drawing nutrients from soil through root absorption rather than consuming other organisms. The endangered status suggests populations may be declining due to habitat loss, land-use change, or invasive species pressure across parts of its range.