00:00 Excerpt begins with polyphonic lines that become agitated. 
00:18 First bird imitations, short repetitive ideas.
00:31 Texture increases with fast delivery of text and fast points of imitation.
00:41 Notice the trilled notes.
00:50 More bird imitations.
00:55 More trills with quick overlap of repeated text.
01:01 Trills intensify.
01:03 Return to polyphonic lines without sound effects.
01:19 Cadence, point of imitation.
01:26 End.
