Nighthawk is a recurring thought that only seems to strike you late at night -- an overdue task, a nagging guilt, a looming and shapeless future -- that circles high overhead during the day, that pecks at the back of your mind while you try to sleep, that you can successfully ignore for weeks, only to feel its presence hovering outside the window, waiting for you to finish your coffee, passing the time by quietly building a nest.


For example:

I have been disturbed by nighthawks of several deadlines lately.