on p87 of the original BW book it says for hunger :
"slight coughlike sound in the back of the throat; then out comes the first cry. it's short to begin with then more steady: waa, waa, waa rhythm"
i have always found this to be true.
p.86 the overtired one is "starts as cranky irregular frequency fussing, but if not stopped quickly, it scalates to an overtired cry: first 3 short wails followed by a hard cry, then 2 short breaths and a longer, even louder cry. Usually they cry and cry and if left alone will eventually fall alseep"
HTH