Ours opens on the 15th of this month. Same 15-bird bag. The birds seem to spend most of their time under the canopy of immature soybeans. I don't know what the birds are foraging for, but these fields get sprayed several times during the growing season for both weeds and insects, usually spider mites and aphids. USDA has been destroying Canada goose eggs for several years in spots where crop damage has been severe.