Shift while on the ground will place the nest. I'm glad you liked the background trees, just lots of fiddling around in gimp to make them. I'm still not 100% happy with them but they are good enough for now. Its been a bit slow of late because uni stuff, but its almost the end of one set and start of the next so I should get a week or 3 where I can make progress. I want to get the main menu / pause menu existing, then controls hints on screen then an ending to the level and scoring / stats screen.