We have 4 Running / Mallard hybrids which have felt totally comfortable with the pool. It is easy to set up, deep enough that birds can submerge sometimes. At the brick stairs they had to get used to, ducks do not like going up. The pond was biweekly emptied (depending on weather) by means of a drainage pump, for pet owners who want to keep their animals longer than until Martin's, I would recommend a filter system, since the amount of water is already considerable and not always the rainwater barrel is sufficient to fill , Moreover, the water smells in the summer in the pool not good because we wanted to use the duckweed for the garden as fertilizer, we have added to the water, no chlorine. Great product for animals! We can only recommend!