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SeabirdsRebecca Schulze
What are seabirds?
•Pelagic- roam far from shore
•Birds that spend most of their lives far out at sea
•Only come to land to breed and raise young
•Plumage offers camouflage dark above light below
•Feathers have waterproofing, help with insulation, and some for buoyancy
•Flexible webbed feet for great swimming and gain speed when taking off water, also some with strong claws to catch fish
Salt glands: •Extract salt from food and water, excrete through birds nostrils
Feeding:•Fish, crustaceans, and squid
•Easy meals by following fishing boats and picking at dumps
•Birds that dive under water to obtain food have a strong head structure to withstand high speeds
Wing shape•Longer tapered wings are for soaring with little effort for hours •Shorter better control to fly right by surface of water•Different birds can be easily recognized by soaring
Breeding: •Colony nesters
•Nurture young for longer then topical land birds
•Most have one brood with one egg a year
•Lifespan: 20- 40 years
Humpbacks and Seabirds:
•Symbiotic Relationship between humpback and many bird species such as gulls, shearwaters, and petrels (Peter Trull)
•As a humpback is creating a bubble net around a school of fish the birds are coming in to catch some food for themselves
http://www.youtube.com/watch?v=4REHLnrbf6k
Species we may see:
•These species were seen in past years on the Dolphin Fleet
• Special trips on Saturday and Tuesday were made with bird specialists
•Data was kept 2006 to 2009, from June- August
Double Crested Cormorant
Northern Gannet
Common Loon
Great Black-backed Gull
Herring Gull
Laughing Gull
Northern Folmar Greater
Shearwater
Manx Shearwater
Common Tern
White winged scooter
Wilson’s Storm Petrel
Thank you!
Questions?