Dichotomous Key/Hemiprocnidae
Key to Hemiprocnidae
[edit | edit source]- 1: Two white stripes clearly present on each side of head, one going from bill to back of head and the other going from bill to neck or chest.
- 2: Two white stripes scarcely or not present on head.
1
[edit | edit source]- Hemiprocne comata: red patch present near eyes.
- Hemiprocne mystacea: red patch not present near eyes.
2
[edit | edit source]- Hemiprocne coronata: Patch of reddish color present near eyes.
- Hemiprocne longipennis: Patch of reddish color absent near eyes.