Booted Warbler 29 NOV 2015

Booted Warbler Iduna caligata, the 3rd HK first in a week, mai po again.

We think this is booted but not Syke's Warbler Iduna rama because:

1. Smaller size and shorter tail
2. Supercilium beyond eye only
3. Shorter bill with no pale lower mandible
4. Respond to booted call