For humans, a raincoat or a down parka can be invaluable when venturing out into the environment. Feathers have incredible insulating quality. If you've ever watched a group of, say, gulls in the rain and wind they will stand into the wind so their feathers are blowing with the direction of their body. Hygiene is critical to the effectiveness of this built-in insulation. Feather structure has a lot to do with dryness.
Most birds have an oil gland at the base of their tails.
Sundove says this gland secretes a fine oil that the birds use to keep their feathers in shape through preening. The oil also provides the birds with a coat of waterproofing. A new variety of red raspberry will extend the berry's season into July. The Agricultural Research Service and agricultural experiment stations in Oregon, Washington and Idaho developed the new variety coho, which takes its name from the red-skinned salmon that resides in the Northwest. Tulameen is the most common late-season variety of red raspberry.