What is a bird? Homeothermic (“warm-blooded”) – allows them to live in a wide variety of environments Waterproof feathers help conserve heat Light, hollow.

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What is a bird? Homeothermic (“warm-blooded”) – allows them to live in a wide variety of environments Waterproof feathers help conserve heat Light, hollow bones aid in flight Oviparous – lay eggs with hard shells that are resistant to water loss

What is a “sea” bird? Spend a significant part of their life at sea Feed on marine organisms (fish, invertebrates) glands in their skull which excrete a fluid with a high concentration of salt Most breed in large colonies Most mate as lifelong pairs Make up 3% of all bird species

Procellariformes ex. Shearwaters, Albatross, Petrels. Excellent flyers, pelagic seabirds that seek food by flying over the ocean, only come to land to breed, well developed sense of smell, elaborate courtship ALL OCEANS 104 sp.

Sphenciiformes 18 sp. Penguins- marine diving birds of Southern Oceans. Flightless, short heavy legs far back on body, wings modified for "flying" underwater, feed on fish, squid, krill

Pelecaniformes Pelicans, cormorants and allies. Feed on fish & squid. Only birds with totipalmate feet, or webbing between all 4 toes. Some have pouch on throat world wide - 62 spp

Anseriformes- Waterfowl- ducks, swans, geese webbed feet, hind toe eliminated, flattened bill Located world wide -150 sp.

Gaviiformes Loons. Heavy bodied, long pointed bill, legs near back of body. 5 spp.

Charadriiformes (shorebirds and relatives)

Ciconiformes Herons, storks, egrets and allies. Long legged wading birds, most of which feed by probing in the mud or picking items off the surface in both coastal and freshwater environments. located world wide. 114 sp

More shorebirds