New stories with a happy ending - Frozen Heron

It's freezing outside, so siblings Tadeáš and Agata go skating on the pond with their father. When Thaddeus sits down on the turned sling to rest, he hears a rustling sound. With Dad's help, they turn the boat around and find a frozen heron underneath. She's completely weak and starved. She doesn't even resist when they start wrapping her in a blanket to get her to the rescue station. Will they arrive on time? Can they still save the hypothermic bird?