Originally Posted by Bryon Wright
from the era of sensible shoes and putees, the Birds of Burma by Smythies can be downloaded freely now, from Wikipedia. This work should not be underestimated even though it is very dated.
I agree. I've used it in the field, and the keys to separating species are probably still invaluable.
The fuzziness of all supposedly absolute taxonomic distinctions - Stephen Jay Gould (1977) "Ever Since Darwin: Reflections in Natural History".
Species and subspecies are but a convenient fiction - Kees van Deemter (2010), "In praise of vagueness". Biology is messy