Western Banded Snake-Eagle vs Crowned Eagle

In short

The most reliable field mark to separate Western Banded Snake-Eagle from Crowned Eagle—especially in immature birds—is overall size and structure: Crowned Eagle is massively larger and bulkier, with a long, heavily barred tail and shorter wings, while Western Banded Snake-Eagle is much smaller, shorter-tailed, and more compact. Juvenile plumages can overlap in some pale and streaked features, but Crowned Eagle juveniles show a strikingly white head and underparts with bold black spotting on the thighs, and a much longer, more heavily barred tail. In perched or flight views, the sheer bulk and proportions of Crowned Eagle are unmistakable compared to the compact, large-headed, short-tailed Western Banded Snake-Eagle. Habitat can also help: Crowned Eagle favors dense forests, while Western Banded Snake-Eagle is more often found in open woodland or forest edge.

Identification tips

1. Size is the first check: Crowned Eagle is enormous—if the bird appears as large as a martial eagle or much bigger than a buzzard, it's not a Western Banded Snake-Eagle. Use this especially when perched or with other raptors for scale.
2. Tail length and barring: Crowned Eagle has a very long tail with three or more bold pale bars and a narrow black tip, visible in flight and when perched. Western Banded Snake-Eagle's tail is short and lacks such heavy barring.
3. Wing shape in flight: Crowned Eagle has relatively short, broad wings for its size, making the tail look even longer. Western Banded Snake-Eagle's wings are proportionally longer and narrower for its compact body, and the tail is always short.
4. Juvenile underparts: Juvenile Crowned Eagle is white below with bold black spotting on thighs and legs; Western Banded Snake-Eagle juveniles are white below with pale brown streaks, mainly on belly and thighs, never with bold black spots.
5. Back and upperwing coverts: Juvenile Crowned Eagle shows a scaled effect on the back and upperwing coverts due to pale feather edgings; Western Banded Snake-Eagle juveniles have paler, browner upperparts with white-edged feathers but lack the strong scaling effect.
6. Head and breast: Juvenile Crowned Eagle has a white head with possible dark patches and a freckled bib; Western Banded Snake-Eagle has a dark-streaked head, neck, and breast.
7. Adult plumage: Both adults are darker, but Crowned Eagle is always bulkier, with a more powerful build, and the long, barred tail is diagnostic. Western Banded Snake-Eagle adults may be all dark grey-brown below (subadults) or streaked, but never as massive or long-tailed.
8. Eye and leg color: Western Banded Snake-Eagle has yellow eyes, ears, and legs; juvenile Crowned Eagle has dull yellow feet and variable eye color (khaki to yellow ochre), but this is subtle and not reliable at distance.
9. Crest: Western Banded Snake-Eagle is described as having a 'crested chest,' but Crowned Eagle is also known for a prominent crest; this is not a strong separator.
10. Habitat: Crowned Eagle is almost always in dense forest or riparian woodland; Western Banded Snake-Eagle prefers more open woodland and forest edge. Use this context if plumage is ambiguous.
11. Behavior: Crowned Eagle is secretive, often perched in deep forest or soaring high above; Western Banded Snake-Eagle is more likely to be seen perched openly at forest edge or in open woodland.
12. Flight jizz: Crowned Eagle's flight is powerful and heavy, with slow, deep wingbeats and a long tail trailing behind; Western Banded Snake-Eagle is more buoyant and compact in flight.
13. Confusion with other species: Juvenile Crowned Eagle can be confused with juvenile Martial Eagle, but not with Western Banded Snake-Eagle due to size and tail pattern differences.
14. Subadult Western Banded Snake-Eagle: May appear all dark below, which could confuse with adult Crowned Eagle at a distance, but the short tail and small size still separate them.
15. No strong vocal differences noted in sources: Use visual and structural marks for separation.

Size

Crowned Eagle is vastly larger than Western Banded Snake-Eagle, with an adult body mass around 3673.5 g [wikidata] compared to the much lighter snake-eagle (no mass given, but length 50-58 cm, wingspan 120-134 cm [wikipedia]). Crowned Eagle is one of Africa's heaviest raptors, appearing extremely robust and powerful, while Western Banded Snake-Eagle is medium-sized and much lighter in build. In the field, Crowned Eagle's size is immediately apparent, especially when perched or soaring.

Plumage

Juvenile and immature plumages are key for separation:

• Juvenile Crowned Eagle: Strikingly white head and underparts, with bold black spotting on thighs and legs. The back is light brown or grayish-brown with pale feather edgings, often giving a scaled look, especially on upperwing coverts. The tail is long, black with three pale bars and a narrow black tip. Some juveniles are so heavily striped they can be mistaken for older birds, but the long, heavily barred tail and short wings are always present. The cere is grey, feet dull yellow, and eye color variable. [wikipedia]
• Juvenile Western Banded Snake-Eagle: Paler and browner upperparts than adults, with white-edged feathers. Head, neck, and breast are dark-streaked; underparts are white with pale brown streaks, mainly on belly and thighs. Subadults may be all dark grey-brown without streaks below. Eyes, ears, and legs are yellow. The tail is short and not heavily barred. [wikipedia]

Adults of both species are darker, but Crowned Eagle always appears bulkier, with a longer, more heavily barred tail and shorter wings, while Western Banded Snake-Eagle is more compact, with a large head and short tail.

Behaviour

Crowned Eagle is a powerful, secretive forest hunter, often seen perched quietly in dense canopy or soaring above forests. It is known for its strength and ability to take large prey. Western Banded Snake-Eagle is more often seen perched openly in woodland or at forest edge, scanning for snakes and other small prey. Its behavior is less secretive, and it rarely soars high like the Crowned Eagle.

Habitat

Crowned Eagle is a specialist of dense forests and riparian woodlands, especially in eastern and central sub-Saharan Africa. It avoids open country. Western Banded Snake-Eagle prefers open woodland, forest edge, and riverine habitats, and is not typically found in deep forest. If you see a large eagle in heavy forest, Crowned Eagle is far more likely; in open woodland, Western Banded Snake-Eagle is the better bet.