Forget the ugly duckling. These cygnets are only a week old, and already beautiful. But the six baby swans, which hatched early June at Northwest Trek, aren’t just pint-sized bundles of fluffy gray cuteness. They’re part of a success story for trumpeter swans in North America, helping the species flourish in the wild. “This year we had six cygnets, which is more than we’ve had in years,” said curator Marc Heinzman. “It’s great to see such a healthy population here.” Paired for life, breeding for the future The new cygnets were hatched to the wildlife park’s breeding pair of swans, …