Why does baby canaries vanish from their nest?

Baby canaries may vanish from their nest due to predation, as adult birds can be vulnerable to predators like cats or larger birds. Additionally, if the nest becomes too crowded or if the parents feel threatened, they might remove or abandon some chicks. Environmental factors, such as disturbances or changes in temperature, can also lead to nest abandonment. Lastly, sometimes the chicks may fall out of the nest during their early attempts to fledge.