Three days later. The decoy nest is now occupied by three foster chicks (let's say they are Pine Siskins). They are chirping, innocent, full of life.
Their mouths (gapes) are often larger and brighter, signaling "Feed me more!" to the exhausted host parents. The "Full" House: How They Take Over pgd954 tour of out chunky brood parasite in be full
: Because they are so large, the "chunky" chicks often out-compete the host's actual offspring for food, sometimes even pushing host eggs or smaller chicks out of the nest to ensure their own survival. Key Evolutionary Tactics Egg Mimicry Three days later
Here lies the "chunky" paradox: Her egg is usually larger than the host's eggs. Despite the size difference, she has a secret weapon—mimicry. The eggs of many brood parasites have evolved to match the color and pattern of the host’s eggs, tricking the mother into accepting the imposter as one of her own. Their mouths (gapes) are often larger and brighter,
A Bold Strategy