Presentation on theme: "Birds By Michelle Anderson and Carly Poesch"— Presentation transcript:
1Birds By Michelle Anderson and Carly Poesch Phylum ChordataSubphylum VertebrataClass Aves
2HabitatIn time, birds have adapted to live in diverse regions including: Forests, mountains, deserts, oceans, marshes, and many more
3Food SourceEarly in earth’s history, birds ate animal food, but seed eating came laterThey now eat almost everything including: Nectar, roots, grass, and seeds
4Importance to Humans and Environment Birds that eat other animals or, predator birds, have an important role in the food chain.They keep rodents under control, helping farmers.Birds help stop the spread of some diseases.Birds spread pollen and seed to help reproduction of plants.
5Unique Characteristics For a 170 lb. man to exert as much energy as a bird, he would have to eat 285 lbs of hamburger or double his weight in potatoes.Some birds have hollow bones to make them lighter, so they can fly.Some birds can maintain a body temp of 40 degrees Celsius even on cold winter days
8RespirationBirds need a steady stream of oxygen to fly, and to be able to release large amounts of CO2The respiration cycle of a bird is much more effective than a mammals, transferring more air with each breathBasically, birds breath in and out at the same time
9Reproductive System95% of birds are socially monogamous, they pair with one mate for at least the length of the breeding season.Cloaca is the reproductive organ in birds.Eggs are fertilized and given nutrients inside the female before the hard shell forms.
10Sensory/Nervous system Birds are very intelligent, they must fly at high speeds, catch prey from long distances, and migrate thousands of miles.This demands lots of gathering and processing informationBird senses are more advanced than humans.Birds have great vision, but taste and smell are not as well developed.
11Sensory System-Migration Birds have a sixth sense-to migrateIt is a magnetic sense; like an internal compassSome few birds, do not have this sense and have learned to use the stars for migration
12Circulatory System Birds have a closed circulatory system. A Closed Circulatory system is a blood circulation system in which blood moves through the body in closed vessels.
13Excretory System Bird’s waste systems are much like reptiles Waste is removed from blood from the kidneyThen converted to uric acid and put in the cloacaThere water is absorbed and bird droppings are formed