Which strategy is suggested as more informative than consulting generalized range maps for predicting winter presence?

Answer

Tracking local agricultural or natural fruit harvests

Since their distribution is food-driven, tracking local fruit harvests can be more informative than generalized maps, as a bumper crop in an area mapped as 'absent' can easily attract a substantial flock.

Which strategy is suggested as more informative than consulting generalized range maps for predicting winter presence?
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