A few questions I got from reading this. Will a Fairy abandon its hatched chicks because of one imposter? Or will the cookoo have already pushed the unhatched e

A few questions I got from reading this. Will a Fairy abandon its hatched chicks because of one imposter? Or will the cookoo have already pushed the unhatched eggs out of the nest? The article said the imposter egg is deposited about 12 days after the Fairy wrens eggs are laid. For the mimic to push the eggs out, it has to hatch faster than the Fairy. Google: Cookoos have incubation period of 9 to 14 days. Wrens 12–16 days. However, cookoos incubate their eggs internally. So, by the cuckoo egg is laid, it has had 18 to 24 hours of internal incubation at 40oC and hatches 31 hours ahead of any host egg laid at the same time. The said that Wrens abandon their nest 40% of the time. However, another article said Wrens only catch the imposter 40% of the time. https://scitechdaily.com/eggs-of-superb-fairy-wren-learn-before-hatching/ https://scitechdaily.com/eggs-of-superb-fairy-wren-learn-bef...