Klaas's Cuckoo vs Reed Cormorant

Klaas's Cuckoo and Reed Cormorant are distinct in appearance and habitat, making them relatively easy to differentiate in the field. Klaas's Cuckoo is a small, iridescent bird often found in woodlands, while the Reed Cormorant is a larger waterbird typically seen near water bodies.

Look for the iridescent green back and white belly with bars in Klaas's Cuckoo. Note the larger size, dark plumage, and presence near water for the Reed Cormorant. Klaas's Cuckoo is more likely in wooded areas, while Reed Cormorant is near water.

Klaas's Cuckoo is much smaller than the Reed Cormorant, which is a medium-sized waterbird.

Klaas's Cuckoo males have a brilliant, iridescent green back and a white belly with green bars, while females are gray-brown with a white belly and brown bars. Reed Cormorants are mostly dark with a slender, hooked bill and lack the iridescent green coloration.

Klaas's Cuckoo is a brood parasite, often seen alone or in pairs, while the Reed Cormorant is often found in groups, diving for fish.

Klaas's Cuckoo inhabits woodlands, forest edges, and gardens, whereas the Reed Cormorant is found near lakes, rivers, and other water bodies.