Summary:
- Parasitic cuckoos are birds that lay their eggs in the nests of other bird species, tricking the host birds into raising the cuckoo chicks.
- Researchers have discovered that cuckoos can produce eggs that closely match the color and pattern of the host species' eggs, helping the cuckoo chicks avoid detection.
- This ability to produce host-matching eggs has allowed cuckoos to remain a single species, even though they parasitize the nests of many different bird species.