It is a interesting (sad also) mechanism. Most sea birds have water proof feathers protecting them from the elements. But according to the link, oil mats together the feathers and water can seep in between the oil. Birds make matter worse, when through their preening (feather cleaning) they ingest the oil.
There are many links available on the internet that review the processes by which oil spills harm birds.
See related links.
because it just doesnt
how to oil paint a rooster's tail feathers
They have a oil gland which has the oil in and they use their bill to use it on their feathers
'They can not lick the oil on the poisoned feathers.' The subject is 'they', the verb is 'can not lick'.
no
Sodium chloride is hygroscopic, absorb water.
It seems strange, but horses do have feathers. There are on the back of the lower leg to absorb water! They are not the type of feathers that a bird would have, but a type of hair.
Their feathers don't absorb water, they're quite buoyant.
With talcum powder
Yes, it does absorb oil but not as well as a sponge or hair. If you need to absorb oil with cotton balls you will need to get lots and lots of them.
That is called "preening". She is cleaning and waterproofing the duckling's feathers with oil and removing old feathers and down.
The bacteria die and absorb the oil.