showed that in poor years, when food resources are
scarce, there is a linear positive relationship between exploration
score and the probability of survival for females.
This is because the bolder individuals are more successful
at locating and competing for what resources there are.
However, in years of abundance, when there is mast seeding
of beech trees, there is a strongly negative linear
relationship between female survival and exploration score.
The authors suggested this may be because high-scoring
individuals become involved in dangerous