Read the following context and answer the question.
Context: Most of my friends who ' ve lived here have moved away . But one couple remains : my rescued tough - guy robin and his wife , a faithful bird - of - valor whose tireless mud - gathering has afforded them TWO NESTS each nesting season since assuming ownership of the back yard . This week their exuberant presence dominated the yard , each of them taking turns at hunting squirmy prey , taking vigorous baths in the birdbath , following me almost literally " under foot . "
Question: What may be the reason that the couple remains ?
Answer:


They are being taken care of .