Thanks Ted, Fable, Turbonetics and madmartian.
Very easy birds to take photos of. A 400mm + crop body can easily take up 1/3rd the frame.
For those interested the both the Indigo and Spotted Kingfishers are readily viewable today within Metro Manila.
This is the route from Manila International Airport Terminal 1 to La Mesa Ecopark that is less than 31km according to Google Maps. From the Ecopark's entrance it is less than a 1km walk to the shooting site through partially asphalted foot path.
https://maps.google.com/maps?saddr=...gHzhSnt37TbhLCXMzGq7Gw9mgHzhQ&mra=ls&t=m&z=13
In terms of number of bird photogs/watchers at any given time I normally count half a dozen at most.
As for hotel accommodations there are a lot of hotels near the Ecopark to stay at for reasonable rates. Just read the reviews for the hotels near by and match them to your comfort level.
I do not know how much it costs to travel there via taxi but it should not cost more than P1,000.
Entrance to Ecopark is free for "bird watchers". Just show them your bins or camera for proof.
Spend a weekend here for Philippine endemics. It is more ideal to visit during weekdays. Less weekend crowds jogging, walking or biking.