Fluffy-backed tit-babbler (Macronus ptilosus)

The fluffy-backed tit-babbler (Macronus ptilosus) is a species of bird in the family Timaliidae. 
The bird is found in Brunei, Indonesia, Malaysia, and Thailand.

Timaliidae, Timalia: The word "Timalo" originates in the Greek "Thimalos", which means "bird". This Greek root was adapted to Latin as "Timalus" and later to Portuguese as "Timalo".

Macronus (Tit-babblers): From the Ancient Greek "makros" (long or large) and "rhinos" (nose/nostril).

ptilosus: the Greek word ptilōsis (πτίλωσις), which literally translates to "plumage" or the arrangement of feathers.
 Ptilon (πτίλον) – meaning "feather", "down", or "wing".
 -ōsis (-ωσις) – a suffix meaning "state of" or "condition of".

In Neo-Latin, the suffix -osus is a standard adjective ending meaning "full of" or "abounding in."