The exact type of birds being described in these verses is debated among scholars and we are not sure of the exact species. Obviously, the important idea here is not the birds themselves, but the sensation of loneliness. The author is using “alone birds” to describe how alone he felt in his suffering.
Most individuals experience this concept when they are really suffering. They feel no one can relate to what they are going through and no one fully understands the pain. This why it is often best to find people to minister to suffering people who have already gone through similar situations (see 2 Corinthians 1:3-6). If we don’t have anyone around who can help in such situations, that is another reason to pray to God to bring in another person who can relate to what the suffering person is going through.
Notice the phrase “I watch” at the beginning of verse 7. He is saying that he lies awake, that is, experiences sleepless times in his suffering. Lack of sleep is often a byproduct of worrying about issues we are dealing with at different moments in our life.
We must never forget that the solution to whatever we are dealing with always begins with giving our problems to God, which is what the author did in the opening two verses of this Psalm.