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The most reliable field mark between Tambourine Dove and African Green-Pigeon is overall color and size: Tambourine Dove is a small, pale, ground-dwelling dove with white or pale underparts and obvious dark purple wing patches, while African Green-Pigeon is much larger, stockier, and bright green overall with maroon wing patches and yellow thighs. In flight, Tambourine Dove shows chestnut primaries and underwings, whereas African Green-Pigeon appears greenish above with maroon on the upperwing. Juvenile Tambourine Doves are paler below with chestnut-fringed feathers, while juvenile African Green-Pigeons are more uniformly olive. Structure and behavior also help: Tambourine Dove is terrestrial and shy, flushing low, while African Green-Pigeon is arboreal, often climbing in trees. Voice, habitat, and size further reinforce the separation.

1. Size is a major clue: Tambourine Dove is less than half the mass of African Green-Pigeon. If the bird appears small and delicate, think Tambourine Dove; if large and chunky, think African Green-Pigeon. This holds for all ages and sexes.
2. Ground vs canopy: Tambourine Dove is almost always on or near the ground, especially in dense cover. African Green-Pigeon is almost always in trees, often high up, and rarely descends to the ground.
3. Adult male Tambourine Dove has a white face and underparts: This is never matched by African Green-Pigeon, which is greenish or yellowish below.
4. Adult female and juvenile Tambourine Dove are paler below than any African Green-Pigeon: Even dull females and juveniles have white or pale bellies, while African Green-Pigeon is greenish or yellowish underneath.
5. Juvenile Tambourine Dove shows chestnut fringes on back, breast, and flanks: This is absent in African Green-Pigeon juveniles, which are more uniformly olive.
6. Wing patches differ: Tambourine Dove has large dark purple patches on the folded wing (adults), while African Green-Pigeon has maroon patches on the upperwing (adults). In flight, Tambourine Dove shows chestnut primaries and underwings, while African Green-Pigeon shows greenish upperparts with maroon but not chestnut below.
7. Bill and feet color: Tambourine Dove has a purple bill and purple-red feet; African Green-Pigeon has a red bill with a white tip and red feet. These are best seen at close range.
8. Eye ring: Tambourine Dove has a purple-red eye ring; African Green-Pigeon’s eye ring is not described as distinctive.
9. Head and crown color: Tambourine Dove males have a grey crown; females and juveniles have a grey-brown crown. African Green-Pigeon’s head is greenish, blending with the body.
10. Flight style: Tambourine Dove flushes low and fast from the ground; African Green-Pigeon takes off from trees and flies more heavily.
11. Vocalizations: Listen for the simple, repeated 'du-du-du-du-du' of Tambourine Dove versus the melodic, whistled 'thweeeloo, thweeeoo' of African Green-Pigeon.
12. Habitat context: If the bird is in thick, shaded undergrowth or low in plantations, Tambourine Dove is likely. If it is in a fruiting tree, especially high up, African Green-Pigeon is more probable.
13. Social behavior: Tambourine Dove is usually solitary or in small groups; African Green-Pigeon can be seen in larger groups in trees.
14. Underwing color in flight: Chestnut underwings and primaries are a Tambourine Dove feature at all ages; African Green-Pigeon lacks this.
15. Pitfall: Female and juvenile Tambourine Doves are duller and can be confused with other small doves, but remain paler below than any green-pigeon. Juvenile African Green-Pigeons lack maroon wing patches, but their overall olive color and larger size help separate them.

Tambourine Dove is much smaller and lighter, with an average body mass of 67 g, compared to the African Green-Pigeon’s 202.5 g. The difference is visually striking: Tambourine Dove is a small, plump pigeon (about 22 cm in length), while African Green-Pigeon is robust and noticeably bulkier. In the field, this size gap is often immediately apparent, especially when both species are seen in similar contexts.

• Juvenile/immature birds: Juvenile Tambourine Doves resemble duller females but have distinctive chestnut fringes to the feathers of the back, breast, and flanks, and remain paler below than African Green-Pigeon. Juvenile African Green-Pigeons lack maroon wing patches and are more uniformly olive above and below, without the pale underparts or chestnut fringes.
• Adults: Adult male Tambourine Dove is white-faced with a black spot behind the eye, white underparts, a grey crown, and pale grey-brown upperparts with large dark purple patches on the folded wings. Females are duller, with white restricted to the belly and more grey-brown on the face and breast. In flight, Tambourine Dove shows chestnut primaries and underwings. African Green-Pigeon adults are overall greenish above, with maroon patches on the upperwing, yellow thighs, and red feet and bill (with a white tip). Underparts are yellowish-green, never white or pale. In flight, the green pigeon’s upperwing maroon is visible, but the underwing is not chestnut.

Tambourine Dove is typically solitary or in small family groups, foraging quietly on the ground in dense woodland or gardens, and is often only seen when flushed. Its flight is fast, agile, and low to the ground. African Green-Pigeon is highly arboreal, often seen climbing in tree canopies, rarely foraging on the ground. It is more conspicuous in fruiting trees, sometimes in groups, and moves with a parrot-like climbing gait. Their foraging style and preferred height in the habitat are distinctive.

Tambourine Dove prefers dense woodland, thickets, and shaded gardens, often in areas with thick undergrowth or plantations. It is rarely seen in open or dry habitats. African Green-Pigeon is found in a wider range of wooded habitats, including riparian forests, woodland, savanna, and urban parks, but is strongly associated with fruiting trees, especially figs. It is much more likely to be seen high in the canopy than on the ground.

Tambourine Dove gives a persistently repeated, simple 'du-du-du-du-du' call. African Green-Pigeon has a more complex, flowing whistle, described as 'thweeeloo, thweeeoo'. The dove’s call is much more monotonous and mechanical, while the green-pigeon’s is melodic and rising/falling.