Small to medium-sized, predominantly grey, long-tailed hawks with barred or streaked underparts and long unfeathered legs. Their wings are fairly short and rounded, being adapted for fast flight while pursuing avian prey, often in deze vegetation where the longish tail enables manouverability. The female is larger than the male.
They have a diverse diet and may also scavenge. Some species associate with animals that flush prey. Sparrowhaws specialise in catching birds in flight, while goshawk takes a fair number of ground living prey as well.

Kaupifalco = kaupi is named for Johan Jacob Kaup, falco is latin for falcon
Polyboroides = like the crested caracara (central and south American raptor)
Melierax = singing hawk
Micronisus = small
monogrammicus = with a single mark
typus = typical
canorus = melodius, singing

Wikipedia

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