Possible Clues:

• Nestling noise
• Brief message in Times scaled down for Scotsman
• Little bird's sound
• Canary comment
• Nestling's call
• Middle of letter conveys little that folk today might want to read
• Sentimental end to short message
• Very pretty linnet finally produces a call
• give every1 a super quick update on what ur doing at the moment (w/ a lot of abbrs) because u only get 140 characters, and that's really not e
• Birdsong