Mother bears that are nursing young cubs continue to lose weight. Other bears slowly begin to gain weight. Green plants mature and toughen, making most of them inedible for the bears. Ant pupae become abundant and bears add them to their diet. Mating season begins and males roam widely to find females without cubs.
Mothers stop losing weight.
Others bears gain weight slowly. All bears gain weight rapidly if these berry crops are good. All bears continue to gain weight. Berries and hazelnuts become scarce. Where acorns are abundant, bears feed and fatten on them.