Cuckoos
This reading profile brings together 2 source-linked articles that reference cuckoos.
Fauna does not yet have a full sourced identification profile for this name, so this page keeps the relevant reading together without inventing missing species detail.Source-linked reading
- Field guideBrood parasitism explainedSome birds occasionally lay in neighbors' nests, while obligate brood parasites depend on hosts for reproduction. Parasites must reach a suitable nest and their young must survive there; hosts may recognize adults, eggs, or chicks, but every defensive choice carries risks and costs.
- Field guideCoevolution and evolutionary arms racesA host defense can favor parasite countermeasures, and those countermeasures can favor new host defenses. Pollinators and flowers can also impose reciprocal selection. The evolutionary response may escalate, cycle, stabilize, vary across landscapes, or involve many species, so a close fit between partners is not by itself proof of a two-species arms race.