Sri Lanka is home to 26 endemic bird species and seven proposed endemic species. BirdLife International recognizes Sri Lanka as one of the world’s Endemic Bird Areas (EBAs). The number of endemic species has changed many times over the years. This is largely due to “close taxonomic revisions”. The number of endemic species has fluctuated from a minimum 20 to a maximum 47. From 1977 the number settled at around 21. The figure was increased to 23 with the addition of two species in 1990. Many authorities have accepted this figure since then.
Wijesinghe published a checklist of the birds of Sri Lanka in 1994 which considered the addition of three more species, but this move did not receive widespread recognition because its rationale was not in keeping with rigorous taxonomic practice. Subsequent publications on the avifauna of Sri Lanka and the South Asia region have not listed these three as endemics. However, within Sri Lankan circles some considered the endemics proposed by Wijesinghe as acceptable. This may be due to an over-enthusiasm in increasing endemic numbers to create a better ornithological image and increase the demand for commercial birdwatching.
In 2001, Warakagoda and Rasmussen described a new bird species, the Serendib scops-owl (Otus thilohofmanni). This is the first new bird species discovered in Sri Lanka since 1868, when the Sri Lanka whistling-thrush (Myophonus blighi) was described.
Check out below Real Lanka bird watching tours to get the opportunity to meet the Sri Lanka endemic birds:

Status: Least Concern
Distribution: Forests, scrub jungles. Very common. All zones

Status: Vulnerable
Distribution: Forests, gardens. Restricted range. Hill country. Descends to low country wet zone during fruiting seasons

Status: Least Concern
Distribution: Forests, gardens. Common. All zones. More common in wet zone.

Status: Vulnerable
Distribution: Forests. Confined to undisturbed forest areas in the wet zone and riparian forests of the dry zone. Restricted location. All zones.

Status: Endangered
Distribution: Restricted range. Low country wet zone.

Status: Least Concernv
Distribution: Forests, home gardens. Very common. More common in hill country.

Status: Least Concern
Distribution: Forests, gardens. Very common. All zones. Most plentiful in dry zone.

Status: Least Concern
Distribution: Forests, gardens close to forest, Common. Hill country.

Status: Near Threatened
Distribution: Forest undergrowth. Restricted range. Hill country.

Status: Least Concern
Distribution: Forests understory. Common. All zones.

Status: Vulnerable
Distribution: Forests, mainly in understory and on the ground. Common. Wet zone. More in low country.

Status: Near Threatened
Distribution: Humid forest undergrowth. Common. All zones. More common in wet zone.

Status: Least Concern
Distribution: tall forests of the wet zone ascending to at least to 1600 metres.

Status: Near Threatened
Distribution: Forests, home gardens, well-wooded ravines. Hill country. Also in humid locations in the Low country wet zone.

Status: Near Threatened
Distribution: Forests. Common. Wet zone. More common in Low country.

Status: Least Concern
Distribution: A variety of open country habitats in both the lowlands and foothills in Sri Lanka, including farm fields and lightly wooded areas.

Status: Least Concern
Distribution: Low country and hills up to about 1000 metres but commoner in the dry zone.

Status: Least Concern
Distribution: Humid forests. Common. All zones, except Northern region

Status: Least Concern
Distribution: Forests, gardens. Common. Wet zone and some riparian forests dry zone.

Status: Vulnerable
Distribution: Undisturbed forests. Associated with bamboo and cane rushes. Restricted range. Low country wet zone and wet foothills.

Status: Least Concern
Distribution: All zones, except Northern region

Status: Near Threatened
Distribution: Forests, scrubs, cultivations. Restricted range. Wet zone and hill country.

Status: Least Concern
Distribution: Forests, home gardens. Very common. More common in hill country.

Status: Vulnerable
Distribution: Undisturbed forests. Restricted range. Wet zone.

Status: Near Threatened
Distribution: Forests, gardens close to forest, Common. Hill country.

Status: Least Concern
Distribution: Forests, scrub jungles. Ground level. Common. All zones.

Status: Near Threatened
Distribution: Forests. Common. Wet zone. Less in hill country.

Status: Least Concern
Distribution: Forests, gardens, cultivations. Very common. Hill country.

Status: Vulnerable
Distribution: Forests. Restricted range. Wet zone. Less in hill country.

Status: Endangered
Distribution: Undisturbed montane forests, streams. Restricted range. Hill country.

Status: Near Threatened
Distribution: Forests undergrowth. Common. Hill country, some locations in low country wet zone.

Status: Near Threatened
Distribution: Forests. Common. Low country wet zone and lower hill country

Status: Least Concern
Distribution: Forests but prefers the wet zone and the mountains, which it ascends to the highest elevations.