When the weather is warm, Keller believes that movement is a crucial factor in drawing birds. "Flagging and motion among the decoys can often pull the less aggressive birds into your spread," he says. "Capturing the birds' attention with the wing-flapping motion of a flag will attract many flocks that would not otherwise respond. When flagging, try to emulate birds that are stretching their wings."
Another good strategy for hunting warm-weather geese is to set up on what Keller calls "loafing water." Canada geese will spend the night on their roost site and then fly out to feed in the morning. "After they feed awhile, they'll move on to a loafing spot to get a drink of water and to rest," Keller says. "This might be a little pond, a wetland, or a flooded section of a pasture. The birds will spend most of the midday and afternoon there before returning to the field to feed again late in the afternoon. Then they'll go back to the roost pond just before dark.
"You find these loafing places by following geese after they leave their feeding field in the morning," Keller continues. "I hunt these spots by placing layout blinds right at the edge of the water. I set a couple of dozen full-bodies on the shore around the blinds and a few floaters in the water. And I call very little in this situation. I'm exactly where the geese want to be, so I just let them come to the decoys on their own."