Yes, you can! Duck, which some days was not on the water, at the first dive or almost fully immerse in water, or even drown.
The secret buoyancy ducks in plumage and keeping it "right."
The duck plumage is very dense and completely impervious to water. That's like a duck achieves this.
The feathers of ducks have the finest bristle - beard. They cling to each other microscopic hooks, and doing so plumage durable and stable.
The second secret waterfowl - fat grease pens with water-repellent properties. If mammals each thread is implemented in the base of the sebaceous gland that lubricates it to not break, the birds, the skin is completely dry. Sebaceous gland have only one on the whole body is coccygeal gland. Bird pushes the grease from the coccygeal gland beak and then puts it on the whole body, every feather.
When the duck is on land, on its feathers sticks dirt. In addition, barb duck feathers without water stick together and break down. So duck you need at least twice a day to bathe.
But after bathing barbs lose their mutual relationship. However, if the feather shake it vigorously, his rasstegnuvshuyusya microcrack will automatically enter into connection with each other, and it again becomes elastic.
That's why swim and once out on the beach, duck begins to "hygiene procedures". This ritual is performed always in strict order. He laid since birth, along with other instincts.
First duck beak wring out water and shakes off - shakes first whole body, then his head. So she gets rid of excess moisture and restores the necessary adhesion between the grooves feathers regain elasticity and flexibility.
Then the duck begins to "stacking" of feathers with its beak. Some waterfowl do it by means of small hooks on the inner surface of the beak, using them as a crest.
And, in the end, duck "naomiwatts", smudging feathers fatty secret coccygeal gland. First bird presses beak on the pituitary gland, squeezing from it, as from a tube, fat grease. Then takes the grease in the beak and RUB the body - first, the feathers of the breast, then the sides, back, wings, belly, tail, feathers on the thighs and finally his head.
As the head beak, of course, not to get the bird lubricates her, rubbing in a circular motion on the back. Or, removing the claws of the fat from the beak, comb their feathers.
With good lubrication of the bird's feathers can hold large amounts of air. So, under duck feather, weighing only 67 grams, fits up to 650 cm3 (more than half a liter!) air, which forms a kind of air cushion, easy as flying and swimming.
Duck, cleaning pens
That is why, if a duck within a few days of not bathing and not caring for the wings, it could drown, once in the water. Her feathers on land without due care dry up and become brittle. Wet, they lose their ability to hold the bird on the water surface. Moreover, with such "lost tone feathers duck and loses the ability to fly: feather through the air is not elastic, and soft, like butter - knife, and therefore does not work necessary for the flight of emphasis required aerodynamic forces.