1There are thousands of different types of birds. From the tiny hummingbird to the flightless penguin, each bird is different and amazing. Turn the page to discover lots of amazing birds! Birds is part of Decodables by Jump!, a comprehensive library of decodable leveled readers that follow a sequenced approach to phonics instruction. Young readers will enjoy colorful, photo-packed nonfiction as they follow a prescribed format supported by the science of reading that encourages reading development.