prunus
Tick tock.
Is it a good idea to remove the male flowers to encourage more female ones?
Just leave them to it, they'll be fine. There's usually a flush of male flowers before the first females arrive, but it all works in the end
You can increase your yields by manually pollinating them - just transfer some of the yellow pollen from a male flower onto the stigma (yellow lumpy bit) in the middle of a female one with your finger or a bit of twig or a paintbrush or anything really. Females that don't get pollinated will wither and rot.