What is "within cooey"

Cooey \Coo"ey\, Cooee \Coo"ee\, n. [Of imitative origin.] A peculiar cry uttered by the Australian aborigines as a call to attract attention, and also in common use among the Australian colonists. In the actual call the first syllable is much prolonged (k[=oo]"-) and the second ends in a shrill, staccato [=e]. To represent the sound itself the spelling cooee is generally used. [Written also cooie.]

Within cooey, within earshot.