| Disposable Diapers Notice the white object in the nest. It is called a fecal sac. Baby robins produce poop in fecal sacs, encased in strong membranes that don't leak. Fecal sacs are like disposable diapers. The parents pick up the sacs with their beaks to remove them from the nest. The babies are in the nest for about 13 days. They poop every time they eat — that's 13 days x 4 babies x 356 insects and worms on average per day. That's a LOT of poop! |
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