The Ugly Duckling Goes On Holidays 2004 one on netflix

When summer arrives, the school semester ends, and the youngest animals on the farm go to summer camp in the woods, with Mariano the rooster. There they find out all about the mysteries of nature, and share some extraordinary adventures. They discover strange mansions, enchanted forests, and mischievous goblins. It’s a summer camp that the Ugly Duckling will never forget!