This video from Ireland says about itself:
11 August 2016
A dog saves a [mallard] duckling from an attacking bird and it did not realize that it was saving the duckling’s life. The dog saw the duckling being chased by the bird through a public park and it ran over to investigate what was going on. The dog frightened the attacking bird away and the duckling ran and jumped into the park pond.
The duckling found itself alone when the mother duck took all her ducklings out of the pond to forage in the grass that surrounds the pond. Her ducklings hatched from their eggs a few days ago and were still very small and vulnerable to attacks from the predatory birds that lived in the park, ducklings are prey animals that many predators will attack and eat.
The ducklings had learned how to swim on the water and they were now learning how to walk on the land by following the mother duck as she foraged and encouraged her baby ducks to forage too.
But a predatory bird was watching the mother duck and her babies as they walked around the park searching for food and when one of the ducklings stopped following the mother duck the bird got ready to catch and eat the duckling. The duckling could not keep up with the mother duck and its siblings and had fallen too far behind its mother and the other ducklings and was now alone and unprotected by the mother duck, the mother duck was not aware that one of her babies had become separated from her.
The bird began its attack by running after the duckling through the grass and when it caught up with the duckling it attacked it by pecking at it with its sharp beak, the bird had become aware of the dog that was a short distance away and became more cautious as it attacked the duckling.
… The duckling ran too and jumped back into the pond and swam away to a safe place, it would later rejoin its mother and all the other baby ducks on the pond. The dog had saved the duckling’s life but the dog did not know that its actions were saving the duckling from being caught and eaten by the hungry predatory bird. The duckling never knew that its life had been saved by a dog.
A video from Ireland which used to be on Youtube used to say about itself:
18 August 2016
A duckling falls asleep on a windy day on top of the mother duck’s back, but then the wind blows and the duckling is blown off its mother’s back and it rolls down a rocky hill. The baby ducks hatched out of their eggs less than a week ago and were still very small and light and were easily blown over by the wind. Every day the ducklings would follow the mother duck around searching for food by walking on the land or swimming in the water. Several times a day the mother duck and the ducklings would take a rest from foraging and fall asleep if they could not stay awake. The ducklings would fall asleep next to and on top of their mother’s back. But sometimes the wind would blow and a duckling would be blown off its mother’s back by the wind.