Green Heron

Green Heron

Butorides virescens

Also known as: Gaulin, Green-Backed Heron, Little Gaulin, Pond Bird, Striated Heron

Predict Sightings

Habitat

Aquatic

Diet

VertFishScav

Active Time

Diurnal

Size

202 g

About This Species

Look for a stocky, crow-sized wader hunched motionless at the water's edge in dense, shrubby cover along slow-moving streams, ponds, and marsh margins — the dark greenish-black cap and rich chestnut neck are diagnostic at close range, though the compact posture and short legs often make it look smaller than it is. Listen for a sharp, explosive *skeow* call, frequently given in flight at dusk or dawn, which is often your first indication of its presence before you spot the bird itself. Late spring through late summer offers the best viewing opportunities, particularly in early morning or evening light when activity peaks near overhanging vegetation and exposed roots or low branches at the waterline, where individuals may use sticks or insects as lures to attract fish — a rare and rewarding tool-use behavior worth watching for.

Ethical Viewing Guidelines

  • Maintain a minimum distance of 10–15 metres, using natural cover or a blind where possible, and observe through binoculars or a telephoto lens rather than approaching directly.
  • As a native migratory bird across North America and Central America, it is protected under the U.S.
  • Migratory Bird Treaty Act, Canada's Migratory Birds Convention Act, and equivalent legislation throughout its range, meaning intentional disturbance, harassment, or take is prohibited.
  • Watch for behavioural cues such as alarm calls, neck-stretching, or flushing, and if any of these occur, withdraw quietly and immediately to avoid disrupting foraging or nesting activity.
LCAvesPelecaniformesArdeidae

Seasonal Activity

3,222,491 sightings · 2000–2026

Citizen science records via GBIF

All monthsThis month

Classification

Kingdom
Animalia
Phylum
Chordata
Class
Aves
Order
Pelecaniformes
Family
Ardeidae

Traits

Diet
VertFishScav
Foraging
Aquatic
Activity
Diurnal
Body mass
202 g

Photo

(c) lauren w., some rights reserved (CC BY-NC), uploaded by lauren w.

CC-BY-NC-4.0

Occurrence data from GBIF.