Table 2 Divergent traits between the Water Rail and Brown-cheeked Rail (adults)
Traits | Water Rail (Rallus aquaticus) | Brown-cheeked Rail (R. indicus) |
|---|---|---|
Sexual dimorphism in body size | Present | Absent |
Body size | Smaller | Larger |
Primary measurements | Smaller | Larger |
Primary-index | Smaller | Larger |
Bill length | Longer and finer | Shorter |
Supercilium | Darker | Lighter (looks to conspicuous/marked) |
Chin and throat feathers | White or light gray | Pinkish cinnamon |
Vane tips of neck-and-breast feathers | Pale/gray | Brownish |
Under tail coverts | White | Deep black-and-white barred |
Outer coverts of the wing | Less frequently barred | More frequently barred |
Pitched growl in call | Low | Very low |
Call duration | Longer | Shorter |
Length of eggs | Smaller | Larger |