Here it's hard to call them after they do their sunrise serenade or their evening serenade as well . If I get them located with a siren they don't come to the call well either . I find that here if I use coyote vocalizations before they talk I have better luck and that using hand held howlers seems to work better then the e-callers for me in this area as so many other people use them but not the hand held howlers any more around here .