Collared Falconet - Microhierax caerulescens
The five recognized species of Microhierax falconets (Falconidae) are the smallest raptors in the world and show no obvious sexual size or plumage dimorphism. The five species have Asian distribution, from northeast India through Southeast Asia, but they are poorly known.
Field observations have shown that Collared falconets, Microhierax caerulescens, exhibit cooperative hunting and breeding in which chicks are attended by adults birds, males and females.  The chicks are feed directly at the nest either by the males or by the breeding female. This species, being very small (the maximum size of these raptors is up to 18 cm), specializes in insects, which are captured mainly on the wing, either in flight or plucked from the foliage.
Photo credit: ŠApisit Wilaijit | Locality: Ban Luang, Chiang Mai, Thailand (2013)