Oil, having lubricated the plumage of waterfowl, causes its death in 4 hours. Why?

Due to the fact that oil is on their plumage, birds manage to lose a large amount of strength during this time, trying to take off, etc.

One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.