Keep in mind that urine can change in color due a variety of reasons, dehydration being one of the most common. However, urine can be discolored due to medications, certain foods (i.e., beets), or as a side effect of health conditions (i.e., liver disease).
These terms describe when an animal is most active: 1  Nocturnal - active primarily at night. 2  Diurnal - active primarily during the day. 3  Crepuscular - active primarily during both dawn and dusk. Many animals that are casually referred to as nocturnal are actually crepuscular.  Metaturnal - active part of the day and part of the night.
This does not mean that diurnal birds are not active later in the morning, in mid-afternoon or in the early evening. There are many activities these birds do each day in addition to feeding - they will preen, sing, bathe, defend their territories, cache food, adjust nesting areas, tend to hatchlings and more.