The cucumbers have started to flower and we have no bees. Apparently, unlike tomatoes, cucumbers and squash have to be pollinated. This morning, I pulled off a male flower and tried my best at pollinating 3 female flowers with that. I guess I will keep at this and see how it goes, I saw another male flower and will repeat the process tomorrow morning.
I did manage to get a photo of the female flower (the males do not have the mini cucumbers.):
Wish me luck!