Within a population, it is common for different ages and/or sexes to have different patterns of timing and distance. Female chaffinches Fringilla coelebs in Eastern Fennoscandia migrate earlier in the autumn than males do.
Within a population , it is common for different ages and/or sexes to have different patterns of timing and distance . Female chaffinches Fringilla coelebs in Eastern Fennoscandia migrate earlier in the autumn than males do .
Where are chaffinches Fringilla coelebs from?
Where are chaffinches Fringilla coelebs from ?
Eastern Fennoscandia
Eastern Fennoscandia