Green Heron (GRHE)

Butorides virescens

Male Green Heron © Kent Leland / Macaulay Library
Female Green Heron © Ligia Torres / Macaulay Library

Green Herons breed in all of the Northeast and Midwest of the U.S., and parts of the very western coast. They winter in parts of Texas and central Mexico, and can be found year-round in parts of Florida, coastal Mexico, and along the southern edge of the U.S.

Additional Maps

Identification

The Green Heron is a medium-sized bird with long bright orange or yellow legs and an elongated black bill that comes to a sharp point. The bird has long toes, as it is a marsh dweller, and a neck that can stretch out almost the entire length of its body. Male Green Herons have a bright russet neck with a long white stripe down the throat, and a pale gray or olive colored body. The feathers on top of the back and wings are a shimmery blue and purple streaked with brown. Their primaries and secondaries are a deep navy blue, as are the very short tail feathers. Both males and females possess bright yellow or orange eyes, which contrasts with the deep blue crest on the top of their heads, which males will occasionally unfold.

Males and females appear virtually identical, except for the females having a generally duller appearance, and not having as many noticeable shades of blue and purple on their body. The white throat stripes are also much thinner or duller in females and juveniles. When courting, males will puff out their neck and head plumage, and noisily flap around or after the female. They circle, dangle their legs, and make as much noise as possible through excessive wing-beating and beak-clicking.

Listen to its songs and calls here.

Habitat

Green Herons wade and live in a variety of wetland habitats including streams, ponds, marshes, lakes, mangroves, and estuaries. They prefer areas with dense vegetation for hiding and nesting, especially with native grasses and reeds. They forage for food in shallow water, usually seen wading on the edges of the lakes and streams they nest near. The birds tend to nest close to water or right above it, building a platform out of sticks at the base of a tree near water or in a cluster of reeds.

Conservation Status 

  • Listed as Vulnerable by Alabama State Species of Greatest Conservation Need
  • Listed as Decreasing by American Bird Conservancy
  • Listed as Vulnerable by Arizona State Species of Greatest Conservation Need (pg 314)
  • Listed as Least Concern by BirdLife International
  • Listed as Vulnerable by Florida State Species of Greatest Conservation Need (pg 87)
  • Listed as Least Concern by the International Union for Conservation of Nature (IUCN)
  • Listed as Secure by Nature Serve Explorer
  • Listed as Vulnerable by Texas State Species of Greatest Conservation Need (pg 36)

Threats to Conservation

Green Herons are very susceptible to pollution and chemical waste or pesticides in the bodies of water that they feed, nest, and live in. Urbanization and developments taking over their native wetlands, pollution of the remaining suitable habitats, and human disturbances in their breeding grounds all contribute to their lessening populations.

Green Herons are also particularly disturbed by anthropogenic noise, caused either by nearby human development or general activities in their wetlands. Aside from excessive noise, any human activity within their habitats during nesting season will dissuade the birds from breeding as successfully, especially if they feel threatened by the risk of losing their nest and eggs due to human interference.

Funding Opportunities
General Management Guides
Regional Management Guides
Resources
Works Cited