The Black-billed Cuckoo is the black-billed counterpart of the Yellow-billed Cuckoo and is found mainly in northern and interior forests. It has a red eye ring and smaller tail spots than its more common relative. Both cuckoos are famous caterpillar specialists that consume hairy tent caterpillars other birds refuse. Its song is a rhythmic 'cu-cu-cu.'
Best time to see a Black-billed Cuckoo
The best time to see a Black-billed Cuckoo is May–June, when about 67% of U.S. sightings happen, based on 2,309 research-grade iNaturalist observations.
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