Don’t bees do that?
Only if there are large numbers of both types of fruit near each other.
But then the seeds of the cross pollinated fruit have to be planted, cultivated and matured to fruit bearing age, approximately 7-10 years, so wild cross pollination is seldom “brought to fruition”..........
And that’s why birds do it, bees do it
Even educated fleas do it
Let’s do it, let’s fall in love
Birds do it, bees do it,
even monkeys in the trees do it...
They do, but with a little less certainty of which pollen goes into which flower than if a person does it. Bees typically go from flower to flower on the same tree, rather than back and forth from tree to tree every time. So they are much less efficient at cross pollination than is a person bent on hybridizing a particular set of strains.