Group 1
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Female cuckoos lay their eggs on other birds' nests, leaving to them the task of feeding the cuckoo's young, along with their own. In this form of parasitism, called brood parasitism, the host's nestlings frequently starve as a result of competition with the parasite, or are ejected by it. In response, many bird species have evolved the ability to recognize the presence of intruder eggs and eject them from the nest.
In a recent paper (Canestrari et al. 2014), the authors find that cuckoo chicks are able to produce a substance that repels predators, reducing predation risk and thus benefitting the host's chicks.
Clutches of Reed Warbler eggs, each containing one (larger) Cuckoo egg
Identify the key players of this system and their roles. Propose a model for their population dynamics that take into account the relevant biological information available.