altricial americas animal antarctica antbird army ant asia asian koel australasia australia beak biological classification bird bird flight bird migration black-billed cuckoo black coucal brood parasite brush cuckoo cacomantis canada caribbean caribbean sea carpococcyx caterpillar cattle egret cercococcyx channel-billed cuckoo chestnut-breasted malkoha chrysococcyx clamator coccyzus common cuckoo cormorant cosmopolitan distribution coua coucal crotophagidae crow cryptic cuckold cuckoo clock cuculiformes cuculus digital object identifier diurnal dromococcyx dwarf koel endemism feather figbird florida fossil frugivore genus geococcyx great lizard-cuckoo greater black coucal greater roadrunner guira habitat handbook of the birds of the world hoatzin honeyeater hornbill india indian ocean indonesia insectivore instinct kenya koel lesser cuckoo lesser ground-cuckoo long-billed cuckoo long-tailed cuckoo madagascar malkoha mangrove mangrove cuckoo meadow pipit mediterranean sea middle east mixed-species feeding flock monogamy natural selection near passerine neomorphus new guinea new world nicholas aylward vigors north africa north america old world pallid cuckoo passerine piaya pied currawong plumage polyandry saurothera sexual dimorphism solomon islands south america squirrel cuckoo surniculus thick-billed cuckoo turaco vulture white-crowned koel wikimedia commons wikisource yellow-billed cuckoo yellowbill