The spread and diversity of bird species in an ecosystem is an indicator of the stability of the ecosystem. The high diversity index of birds represents the healthy ecosystem and stable condition so that it can support bird life. The aim of the study was to determine the level of bird diversity on small islands in Maluku, namely Air Louw Hamlet Protected Forest in Ambon Island, bird species abundance and bird response to land cover changes. The study was conducted in April - June 2019 using the Line Transect method on a 100 m long track with a distance between 100 m lane, and the width of the transect band 50 m left and right lane on a plot area of ​​50,000 m2 (5 ha). Observations were carried out at 07.30 - 10.00 WIT and 16.00 - 18.30 WIT. The results of the study found that the number of birds on transect 1 was 81, transects 5 were 46, transects 2 were 37, transects 4 were 32, and transects 3 were 18. The Margalef Richness Index value (R1) ranges from low to moderate at 2.596851 - 2.873082 (2.5 <R1> 4). This condition was caused by the low number of bird species found in the study location, which was only as many as 22 species. The Shannon-Winer Diversity Index (H‘) was classified as moderate at 1.05 - 1.88 (1 <H’> 3). Evenness Index (E) was classified as medium on 4 transects of 0.24 - 0.56. The density of bird populations on each transect was 1 transect (81 tails) with a population density of 147 tails / ha. Transects 2 was 37 tails with a population density of 72 tails /ha. Transects 3 was 18 tails with a population density of 41 /ha. Transect 4 was 32 tails with a population density of 61 tails / ha and transect 5 was 46 tails with a population density of 74 tails /ha. The highest population density was Maluku Perling Bird as many as 157 tails / 5 ha, Walet Sapi as many as 83 tails / 5 ha, Cabai Kelabu as many as 44 tails / 5 ha and Madu Sriganti Bird as many as 42 tails / 5 ha. The results also found 2 species of birds that have conservation values ​​and protected values ​​as well as endemic species of Maluku with very limited distribution properties, namely Sikatan Kelabu (Myagra galeata) and Cabai Kelabu (Dicaeum vulneratum).

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