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Birds

Birds.

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Birds

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  1. Birds

  2. The evolutionary origin of birds has always been a subject of considerable debate. Birds and flying reptiles have delicate, lightweight skeletons which do not fossilize well - hindering studies on how the birds evolved. The first bird fossil to be found was a feather, which was discovered in 1860 in a limestone quarry in Bavaria. The feather was given the name Archaeopteryx, which is Greek for 'ancient feather'. A year later an almost complete skeleton of Archaeopteryx was discovered in the same quarry, with the feathers and other fine structures preserved in minute detail.

  3. The skeleton showed several features which are intermediate between reptiles and birds, suggesting that Archaeopteryx and the other birds evolved from a dinosaur similar to the Velociraptor featured in the film 'Jurassic Park'. Seven partial or complete Archaeopteryx skeletons have now been found, and they are still among the most famous, and scientifically valuable, fossils.

  4. Feathers make the bird

  5. Alabama Birds Checklist of Alabama Birds - Geographical & Seasonal Distribution Alabama Ornithological Society

  6. Order Gaviiformes Loons Specialized for swimming and diving. Come ashore only to breed. In flight, head lower than body. Wingbeats fast. Eat fish, crustaceans, some water plants.

  7. Common loon – Gavia immer

  8. Order Podicipediformes Grebes Swimming and diving birds, smaller than loons. Flat lobes on toes. Short legs far back on body. Flight weak and hurried. Taxi before becoming airborne. Dive and pursue aquatic animals.

  9. Pied-billed grebe – Podilymbus podiceps

  10. Order Pelecaniformes Pelicans and their Allies Large, aquatic fish-eating birds with all four toes webbed. Most nest in large colonies and are silent outside breeding grounds.

  11. American white pelican – Pelecanus erythrorhynchos

  12. White pelicans in flight.

  13. Brown pelican Pelecanus occidentalis

  14. Brown pelican diving For fish.

  15. Double-crested cormorant – Phalacrocorax auritus

  16. Double-crested cormorant

  17. Anghinga (snake bird) – Anhinga anhinga

  18. Order Anseriformes Waterfowl Aquatic, with webs between the three front toes. Long necks and narrow pointed wings. Flattened bills with tooth-like edges that serve as strainers.

  19. Geese Subfamily Anserinae Tribe Anserini

  20. Canada goose – Branta canadensis

  21. Snow goose – Chen caerulescens

  22. Surface-feeding Ducks (Dabblers) Subfamily Anserinae Tribe Anatini

  23. Mallard – Anas platyrhynchos

  24. Winter Distribution Summer Distribution

  25. Pintail – Anas acuta

  26. Blue-winged teal Anas discors

  27. Blue-winged teal

  28. Green-winged teal – Anas crecca

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