Wireless sensors, synthetic aperatire radar, aerial surveillance all are things that exist. These things have existed since Vietnam and are significantly better

Wireless sensors, synthetic aperatire radar, aerial surveillance all are things that exist. These things have existed since Vietnam and are significantly better now than they were then. The record for Lorawan sensor mad range was ~1,300 km / 830ish miles. You could partition the rainforest into grids and use these sorts of sensors if you wanted to be excessively thorough. Not easy or cheap, but very doable with today’s technology and a bit of customization. Note: my grandfather invented some of the rf sensor technology designed to be airdropped by the US military over the forests of Vietnam for this exact thing. It worked well for what it was designed for.