Estrus chirps?

[standsleeper]

I read an article about what they call"estrus chirps". My questions are, do any of you use this sound for coyote?, do they work as well as the stats from the article suggest?, and finally; if they do where can I get this sound for the FX3 [ When I buy one]?

[bhw]

for foxpro, it's the female wimpers sound!!

Guys are using the sound with good success in NY this past week