We have two 2-1/2 month old peking ducks....they have been living in my greenhouse since they were a couple weeks old...they have a pool right outside that i clean every two days or so and refill with fresh....well....we have been carrying them down to the pond a couple times a week and putting them in the water off the side of the dock...well..they go to the very edge of the pond for about 5 minutes...eat the muddy water for a couple more minutes...they dont swim around at all...they then get out of the water and procede to just waddle back up to the house....im getting frustrated because they wont stay down there and swim...that is the reason we got them...now what do i do...do i keep taking them down...will they eventually get used to the pond...please give me any pointers as to what to do???