a minor fourth stand for one bird, and a diminished major seventh another
Fourths and fifths are 'perfect' and so are neither major nor minor, though they can be augmented (up) or diminished (down). And a 'diminished' major seventh would just be called a minor seventh (update: or maybe a dominant seventh depending on context). (Update: and I'd say something about what tye wrote above, but his story is too cool to quibble about music terminology).
In reply to Major pedant
by runrig
in thread Visualizing bugs
by brian_d_foy
| For: | Use: | ||
| & | & | ||
| < | < | ||
| > | > | ||
| [ | [ | ||
| ] | ] |