False Bruce Spanworm vs Great Blue/Cocoi Heron

Macaria loricaria compared with Ardea herodias

Key Differences

• False Bruce Spanworm is Near Threatened while Great Blue/Cocoi Heron is Least Concern.

Taxonomic Classification

Rank	False Bruce Spanworm	Great Blue/Cocoi Heron
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Arthropoda (Arthropods)	Chordata (Chordates)
Class	Insecta (Insects)	Aves (Birds)
Order	Lepidoptera (Butterflies & Moths)	Pelecaniformes (Pelecaniformes)
Family	Geometridae	Ardeidae
Genus	Macaria	Ardea
Species	Macaria loricaria	Ardea herodias

Evolutionary Relationship

False Bruce Spanworm and Great Blue/Cocoi Heron share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

False Bruce Spanworm

NT — Near Threatened

Great Blue/Cocoi Heron

LC — Least Concern

Physical Characteristics

Attribute	False Bruce Spanworm	Great Blue/Cocoi Heron
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

False Bruce Spanworm

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Denmark, Norway, Sweden, and United States. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

Great Blue/Cocoi Heron

Habitat

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

Range

Widely distributed across Europe (5 countries), North America (United States), and South America (Colombia, Ecuador, Venezuela).

Great Blue/Cocoi Heron

Great Blue/Cocoi Heron (Ardea herodias) is classified as Least Concern (LC) on the IUCN Red List. Widespread and abundant across its range, with stable populations and no immediate conservation concerns.

Shared Countries

Both species can be found in 2 countries:

🇳🇴 Norway 🇺🇸 United States