Ive used quite a few calls, even ones from the USA, but just find the best one for me is the Primos, but what ever you use if it pulls the crows in well that's the main thing i have been using the yellow primos and have now found out they do a new one, i think its a 'primos power call' any one bought one yet and if so any luck with the crows with them, Pykie are most of your kills carrion crows or rooks, as i seem to shoot loads of jackdaws at this time of the year and mostly rooks on laid wheat or barley later in the year, and have a few carrion crows now and then, would love to shoot hooded crows but there just arnt any round my way