Problems of survival: Illustrates a problem from the story, such as finding food or shelter, recognizing poisonous berries, confronting a skunk, or killing a bird (educationworld.com)
The state of Delaware has a «dead bird problem.» (edweek.org)
You can obviously skip a day or two of harassment from time to time without ill effect, but the idea is generally to stay on top of the problem so you don't have to fight a major bird problem every other week.» (canismajor.com)