We can absolutely do VTOL reliably at bird scale, look at acrobatic RC planes and quad drones. Even the smallest helicopters are massive and the square cube rul

We can absolutely do VTOL reliably at bird scale, look at acrobatic RC planes and quad drones. Even the smallest helicopters are massive and the square cube rule will always make that dangerous in this gravity. But also like, harrier, F-35, osprey, etc.