I've helped with trapping 3 years now, almost time to do it again....just have fun , learn from the experience, watch the birds behavior while you have time...to tell you the truth, they don't like using calls where i do it , but i always bring mine and just do some clucking and purring and an occassional yelp, maybe once an hour...I'm a firm believer in it, I've called in every group I have trapped and i know without it, it would of been a LONG and lonely day even with the corn out...I'd ask them about the calling, just minimize the amount of calling.I did have an issue last year, when i fired the net, the canisters caught the grasses on fire, i had birds under the net, fire all around them, it was an experience for sure, lol...put the fire out first if it happens, lol...Get pics.......

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