Could there be negative effects when a baby sleeps in his swing more than it sleeps in its crib? (babygearspecialist.com)
Sleep changes in children are more likely to be a change to sleeping less rather than sleeping more. (kidsmatter.edu.au)
Typically for periods no longer than five hours, but we have no inclination that she does anything other than sleep in the window and wait for us. (cocosheartdogrescue.org)