Definition of "tweety"

If, though, he's curious about the voice of a particular instrument — “What made that high tweety sound?” — a knowledgeable parent can provide answers.

1973, Fredelle Bruser Maynard, Guiding Your Child to a More Creative Life, page 165

Witness Calvin Harris, who got himself into a right old tweety huff over a record review the other day, accusing the unnamed writer of giving other musicians - "rich people's kids" - good reviews "because mummy fucked the journo in the 80s"; but only giving Calvin's album two stars because the journo skipped through the tracks on his lunchbreak.

2009 September 6, Miranda Sawyer, “Robbie returns”, in Guardian‎