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This Concept Map, created with IHMC CmapTools, has information related to: Davies 2011 CMap, Adult Female "bood parasites" behavior (she is the one laying the "intruder" egg) including Host egg mimicry; & eggs that are larger, more well developed & have a thick shell., nestlings' behavior (brood parasite) include ejecting host eggs, egg stage by complex or hard to enter nests, at the nestling stage by the host bird may abandon the nest (and attempt a new nest), Host species behavior to counter nest parasitism at the egg stage, Host species behavior to counter nest parasitism at the at the nestling stage, 1 % of all bird species suggesting high evolutionary costs but it has evolved multiple times in different evolutionary groups = Convergent Evollution, Adult Female "bood parasites" behavior (she is the one laying the "intruder" egg) including Female Cuckoos are very secretive and quick, and can lay their eggs very quickly before the host birds can return to the nest, Brood Parasitism involves Adult Female "bood parasites" behavior (she is the one laying the "intruder" egg), Brood Parasitism involves nestlings' behavior (brood parasite), Brood Parasitism involves co-evolution of brood parasite vs host behaviors; leading to an "evolutionary arms race"., Brood Parasitism involves Host species behavior to counter nest parasitism, nestlings' behavior (brood parasite) include mimmic the color of the mouth gape of the host species (with a bigger mouth), egg stage by parents are attentive to distinct features of their own eggs such as color, shape, marking sizes and marking distributions, Brood Parasitism is found in 1 % of all bird species suggesting high evolutionary costs, complex or hard to enter nests or well concealed, Mobbing behavior Defined by Host birds swarming and attacking a female cuckoo before she can lay her egg in their nest, nestlings' behavior (brood parasite) include adapting calls to be similar to host's call, and call louder to outcompete other nestlings, reject abnormal eggs by breaking the abnormal egg or removing it from the nest, Adult Female "bood parasites" behavior (she is the one laying the "intruder" egg) including Laying eggs in a darker nest making it harder to locate the intruder egg