Why Some Bird Babies Ride Piggyback

Having your children trail you like ducklings in a pond sounds pretty good to human parents, who are stuck carrying or pushing their offspring through toddlerhood. But some animals with mobile babies choose to carry them anyway. One scientist looked at waterbirds to figure out why certain species find it worthwhile to haul their kids around, while others leave them to paddle alone. The reasons he found range from snuggle time to murderous fish.

Animals including anteaters, bats, prima

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