Great Cormorant vs Eurasian Bittern

The Great Cormorant and Eurasian Bittern are distinct in appearance and habitat. The Great Cormorant is a large, dark waterbird often seen diving in open water, while the Eurasian Bittern is a cryptically colored marsh bird known for its booming call.

Look for the Great Cormorant's large size, dark plumage, and white throat patch when diving in open water. The Eurasian Bittern is best identified by its streaked brown plumage and booming call in marshy reed beds. Note the habitat: cormorants are in open water, bitterns in dense reeds.

The Great Cormorant is larger and more robust than the Eurasian Bittern.

The Great Cormorant has a predominantly dark plumage with a white throat patch, whereas the Eurasian Bittern has a streaked brown and buff plumage, providing excellent camouflage in reeds.

Great Cormorants are often seen diving for fish in open water, while Eurasian Bitterns are more secretive, often remaining hidden in dense reed beds.

Great Cormorants are found in coastal and inland waters, whereas Eurasian Bitterns inhabit freshwater marshes with dense reed beds.

The Eurasian Bittern is known for its distinctive booming call, especially during the breeding season. The Great Cormorant is generally silent.