Are There White Ibises in Maine?
White Ibises are rare visitors to Maine, appearing mainly as fall vagrants from southern states. These wading birds occasionally show up along coastal areas and estuaries during late summer and autumn, but they do not breed or winter here regularly. Most Maine sightings occur when birds wander north beyond their typical range.
By Tim, founder of Easy Street Markets. I maintain the wildlife database and verify every animal and source myself. Updated July 21, 2026.
White Ibis · David Garza CC BY
White Ibis · Mayela y Ramón CC BY-SA
White Ibis · Public domain CC0
- 251
- GBIF records
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- birding hotspots
Yes, white ibis are in Maine. Next you'll want:
White Ibises are rare visitors to Maine, appearing mainly as fall vagrants from southern states. These wading birds occasionally show up along coastal areas and estuaries during late summer and autumn, but they do not breed or winter here regularly. Most Maine sightings occur when birds wander north beyond their typical range.
Where White Ibises Are Found in Maine
White Ibises do not breed or establish resident populations in Maine, but rare individuals occasionally appear along the coast, particularly in southern and downeast portions of the state. When these birds do occur in Maine, sightings concentrate in tidal marshes and estuaries of the Atlantic coast. The Acadia region, coastal areas from Penobscot Bay southward, and river mouth environments provide the habitat types that might temporarily attract wandering ibises. Most records come from late summer into early fall when southbound migration and post-breeding dispersal bring birds northward into unfamiliar territory. The cooler waters and northern latitude of Maine represent the northern extreme of where White Ibises occasionally venture, making them unpredictable visitors rather than regular seasonal residents. Seethe White Ibis guide for Mainefor more.
Season and Timing in Maine
White Ibis sightings in Maine are most likely between late August and October, during the post-breeding dispersal period when young birds and adults move northward following nesting season in the Southeast. Fall weather patterns can push birds off course, and during particularly warm autumns, wandering ibises reach the Maine coast more frequently than in typical years. Winter presence is extremely rare, as Maine's frozen conditions and ice-covered marshes do not support ibis foraging. Spring sightings are even less common than fall, though occasional birds turn up during northbound migration. Once late fall arrives and temperatures drop, any White Ibises present in Maine disappear, retreating to their core range in the Carolinas, Gulf states, and Florida. The species' nomadic autumn behavior makes timing unpredictable, but late summer represents the season when visitors tocoastal Maine wildlife areashave the best slim chance of encountering one. Seethe Maine wildlife guidefor more.
How to Identify a White Ibis
White Ibises are medium-sized wading birds, measuring about 23 to 26 inches tall with a distinctive curved downward bill that sets them apart from herons. Adults are all white with a bright red-orange face and red legs, making them unmistakable in good light. Younger birds show a mixture of white and dusky brown plumage, particularly on the wings and back, which can cause confusion with other species. The long, slender, downward-curved bill is the key identification feature that separates ibises from egrets and herons, which have straight or slightly pointed bills. In flight, White Ibises hold their necks extended, unlike herons that fold their necks into an S-shape. Look for their pattern of white wing feathers alternating with dark flight feathers in immature birds. When feeding, they probe the ground in a distinctive manner, thrusting their curved bills into mud and shallow water in search of small prey.
Where Sightings Concentrate in Maine
The Maine coast provides the primary habitat for any White Ibises that reach the state, with salt marshes and tidal areas offering the best conditions for finding them. Coastal estuaries from the Penobscot region southward, including areas around Acadia National Park, attract the occasional wandering ibis during fall. Mudflats and shallow marsh edges where water levels are manageable draw foraging ibises, as these birds need soft substrate for probing and shallow water for wading. The Atlantic coastal fringe offers scattered records over decades, with no consistent hotspots because sightings are so irregular. Local birding communities track sightings carefully, and reports of White Ibis in Maine typically reach birding alert networks quickly. Visiting theMaine wildlife guideor checking regional birding groups provides the best way to learn about recent sightings and current locations when a bird does appear.
Typical Behavior of White Ibises
White Ibises are social birds that often feed in flocks, probing mud and shallow water for small fish, crustaceans, crayfish, and aquatic invertebrates. They are most active during dawn and dusk but forage throughout the day, wading through marshes in their characteristic slow, methodical searching pattern. When resting, they perch on branches or levees, sometimes in large numbers when roosting at night before dispersing to feeding areas the next morning. These birds are adaptable foragers, adjusting their feeding technique based on water depth and prey availability. In Maine, any vagrant White Ibis would exhibit the same behaviors as southern populations, walking through shallow water with head down and bill ready to snap up small prey. They communicate with croaks and grunts, particularly when gathering at roost sites or in family groups. Flocking behavior is characteristic, though vagrant individuals may be solitary when wandering far from their normal range.
Coexistence and Legal Protection
White Ibises are protected under the Migratory Bird Treaty Act, meaning they cannot be harassed, captured, or harmed in any way. If you observe an ibis in Maine, simply viewing from a distance without disturbing the bird is the appropriate response. These birds are not aggressive toward humans and pose no safety risk; they are far more likely to avoid people than approach them. Ibises do not defend territories aggressively against other waterbirds and often coexist peacefully with egrets, herons, and other marsh species. Because Maine sightings are so rare and valuable for the ornithological record, reporting ibis sightings to local bird clubs and organizations helps document range changes and provides important data about avian populations. Never attempt to capture photographs at the expense of the bird's wellbeing; a calm observation from a safe distance protects both the bird and your opportunity to enjoy the sighting.
Similar Species in Maine
White Ibises can be confused with other white wading birds that occur in Maine, particularly Great Egrets and Snowy Egrets. Great Egrets are larger, with black legs and yellow bills, while Snowy Egrets are smaller with yellow feet and black bills and legs. The curved ibis bill is the most reliable feature to separate them from egrets, which have straight, pointed bills. Glossy Ibises also occur as rare vagrants to Maine; they are much darker, with an iridescent brownish plumage and a similar curved bill. Roseate Spoonbills, with their distinctive large flat bill, would be even rarer and more unlikely in Maine than White Ibises. Wood Storks, should they wander north, have a massive thick bill and black and white plumage pattern quite different from the all-white ibis. Learning the field marks of these similar species improves your ability to confirm a sighting and contribute accurate records to regionalwildlifedocumentation.
Frequently Asked Questions
Do White Ibises ever breed in Maine? No, White Ibises breed in southern coastal states, from the Carolinas through the Gulf Coast to Florida and the Caribbean. They do not nest or establish regular breeding populations north of their typical range. Have White Ibises ever been recorded in Maine? Yes, rare sightings have been documented, particularly in coastal areas during fall migration, though records are infrequent and unpredictable. What should I do if I see a White Ibis in Maine? Report your sighting to local bird clubs, birding alert networks, and ornithological organizations, as these rare records contribute valuable data about population movements and range shifts. Can I get close to a White Ibis for photographs? Approach any bird slowly and carefully, maintaining a respectful distance that does not cause stress or flight; ibises are sensitive to disturbance, and their wellbeing is more important than getting the perfect photograph.
Plan your white ibis sighting in Maine
251 verified white ibis records have been logged in Maine, most recently in 2025. See the GBIF records.
Where to look in Maine
- Acadia National Park · Wildlife Watching, Birdwatching · Find hotels
- Appalachian National Scenic Trail · Wildlife Watching, Birdwatching · Find hotels
- Katahdin Woods and Waters National Monument · Wildlife Watching, Birdwatching · Find hotels
- Saint Croix Island International Historic Site · Wildlife Watching · Find hotels
- Frances Perkins National Monument · Find hotels
- Maine Acadian Culture · Find hotels
- Monhegan Island · 324 species recorded
- Biddeford Pool · 321 species recorded
- Acadia NP (please use more specific location if possible) · 294 species recorded
- Biddeford Pool--East Point Sanctuary · 289 species recorded
- Wells Reserve at Laudholm · 284 species recorded
- Stratton Island · 281 species recorded
Birding hotspots via eBird (Cornell Lab).
More places to see white ibis
More wildlife in Maine