The birds have been singing the glory of God since their creation.

Psalm 63:1-5  
1 You, God, are my God,
earnestly I seek you;
I thirst for you,
my whole being longs for you,
in a dry and parched land
where there is no water.  
2 I have seen you in the sanctuary
and beheld your power and your glory.
3 Because your love is better than life,
my lips will glorify you.
4 I will praise you as long as I live,
and in your name I will lift up my hands.
5 I will be fully satisfied as with the richest of foods;
with singing lips my mouth will praise you.