The Brains on Birds. Tundra Biome Cold biome that averages –10 degrees Celsius, 14 degrees...
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The Brains on Birds
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Tundra Biome
Cold biome that averages –10 degrees Celsius, 14 degrees Fahrenheit, where the soil remains frozen year round in what’s called permafrost.
Treeless in arctic regions or high mountaintops.
Plant life, consisting of dwarf woody plants, grasses, and lichens, is restricted to a growing season of ~60 days.
Arctic animals include mammals like caribou, musk ox, polar bear, and many migratory birds, which fly south during winter.
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Tundra
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Tundra
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Class Aves
9000 species
Characteristics: Birds are uniform in structure, due to the
necessities of flight, but diverse in lifestyle. Forelimbs are modified into wings and hind
limbs are adapted to walking, swimming, or perching.
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Wing
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Characteristics continued…
All birds have a toothless beak and lay eggs, which are internally fertilized.
Birds are endothermic or warm blooded, which means they can maintain a constant body temperature independent of environment.
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Beak
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Flight
Birds have well developed brains and nervous system necessary for flight, which also allows complex social behavior.
Feathers are an exclusive characteristic of birds, which provide large surface areas for lift with very low weight.
The skeletal system has hollow bones laced with air cavities for maximum strength with low weight.
Birds have muscular mound for a tail, which controls the tail feathers for steering in flight.
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Skeletal System
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Fun Fact Time:
What is the largest known bird in the world (past and present)????
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No, it is not Big Bird….
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Answer: Glider
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Fun Fact: Largest Bird in World
Dr. Kenneth E. Campbell discovered the 25 ft. wingspan of Argentavis magnificens.
The feather size from such a bird is estimated to have been 1.5 meters long (60 inches); and 20 centimeters wide (8 inches).
It lived six million years ago during the Miocene period throughout Argentina.
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What??!!!
However, even though this bird’s muscles were well-developed, they still were not sufficient to generate enough lift for the giant bird to leave the ground. So how did this, the largest of all birds, fly?
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How did it fly? They confirmed that the now-extinct Argentavis magnificens was
actually a high-performance glider, soaring on thermals and updrafts just as vultures and birds of prey do now.
Apparently, Argentavis relied on updrafts in the foothills of the Andes, known as thermals, which are columns of heated air that are deflected upward over a ridge or a cliff.
Thermals provide lift for small aircraft as well as for soaring birds, such as modern-day condors, eagles and storks.
It’s likely that Argentavis circled upwards on a thermal and then soared from one thermal to another over long distances in what the researchers refer to as “slope soaring”.
Even though the bird’s huge wingspan gave it a 100-foot turning radius, this was small enough that it could continue circling within a thermal as it rose high above the plains to search for its prey.
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Comparison
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Birds of Prey
Owls have adaptations including larges eyes and disk-like faces to heighten their sense of hearing for night hunting.
Hawks, falcons and eagles have sharp talons and hooked beaks for killing and tearing a variety of prey from rodents and snakes to fish.
The Turkey vulture is a scavenging carnivore common in Alabama, with adaptations such as a featherless head and sense of smell for finding carrion.
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Owl
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Hawk and Falcon
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Eagle
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Turkey Vulture
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Aquatic Birds
Many oceanic birds such as the Albatross have long narrow wings adapted to take advantage of wind for soaring.
Shorebirds such as Terns and Seagulls take on large migrations with their swept wings for high-speed flight.
Penguins and Cormorants have adapted themselves to swimming and specialize in catching fish.
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Albatross
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Penguins
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Cormorant
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Freshwater Aquatics
Common in Alabama’s lakes, ponds, and rivers Ducks, Geese and swans adapt to swimming and diving with webbed feet and a watertight coating of oil.
Long legged waders such as Herons, Egrets and Cranes walk along the shallows in search of crustaceans and small fish they spear with their bills.
Kingfishers are often seen fishing by hovering over water to locate fish and then capturing prey with a dramatic vertical dive into the water.
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Duck and Geese
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Heron and Egret
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Kingfisher
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Videos
http://video.nationalgeographic.com/video/kids/animals-pets-kids/wild-detectives-kids/wd-ep2-owls/
http://video.nationalgeographic.com/video/animals/birds-animals/birds-of-prey/hawk_redtailed_rattlesnakemeal/
http://video.nationalgeographic.com/video/kids/animals-pets-kids/birds-kids/antarctica-emperor-penguins-huddle-vin-kids/
http://www.pbs.org/wnet/nature/episodes/hummingbirds-magic-in-the-air/video-full-episode/5475/
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Song Birds
The songs of the birds in this group such as the common Bluebird are used to mark territory.
Many songbirds such as Finches & Chickadees are successful in disturbed habitats.
This group includes species familiar to the backyard feeders and birdbaths such as the Blue jay, Robin, and Mockingbird.
Hummingbirds include the smallest birds and are important pollinators.
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Finches and Chickadees
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Blue Jay and Mockingbird
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Hummingbird
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Ground Nesters
Many familiar game birds such as Quails & Pheasants are difficult to detect due to camouflage.
Prairie Chickens of the Great Plains are known for their elaborate courtship dances and plumage displays.
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Quail and Pheasant
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Quailman!!!!
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Prairie Chicken
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Ground Nesters
The Roadrunner of the southwest is a crow-sized predator of snakes and lizards.
Benjamin Franklin once suggested the Wild Turkey as our national bird, when he pointed out that Bald Eagles are mostly carrion eaters.
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Road Runner and Wild Turkey
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Male and Female Turkey
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Videos
http://video.nationalgeographic.com/video/animals/birds-animals/
http://www.pbs.org/wnet/nature/episodes/hummingbirds-magic-in-the-air/video-full-episode/5475/
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Tree Nesters
Parrots and parakeets popular in the pet trade are unique in having a hinged upper beak, which they use for fruits and cracking nuts.
Hornbills of Asia and Africa are so serious about parenting that the male wall up the female in a tree cavity and feeds her for the duration of the eggs incubation.
Woodpeckers in the Americas are cavity nesters with specialized bills designed to hammer insect larvae from decaying trees.
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Parrot and Parakeet
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Woodpeckers
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Hornbill
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Flightless Birds
The Ostrich of Africa, Rhea of South America and Emus of Australia are savanna birds ranging from the 9 feet 350 pound Ostrich to Rheas at 3 feet and 50 pounds. All eat mostly plants, fruits nuts.
Cassowaries are seed eating forest birds of Australia and the south Asian islands.
The Kiwi of New Zealand has the distinction of having the largest egg to size of the body of any bird.
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Ostrich and Emu
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Emu babies
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Cassowaries
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Kiwi Bird
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Video
http://www.pbs.org/wnet/nature/episodes/hummingbirds-magic-in-the-air/video-full-episode/5475/