nighthawk

dictionaryofobscuresorrows:

n. a recurring thought that only seems to strike you late at night—an overdue task, a nagging guilt, a looming and shapeless future—that pecks at the back your mind while you try to sleep, only to squawk when you try to feed it, that you can successfully ignore for weeks, only to feel its presence hovering just outside the window, waiting for you to finish your coffee, passing the time by quietly building a nest.