Please add this so other mods can properly raise biters on destroy :)

script.on_event(defines.events.script_raised_destroy, spawnLorax)

also, you can add this just below the previous create_entity for a nice little notification when someone angers the trees -

event.entity.surface.create_entity{position=event.entity.position,name="flying-text",text="!"}

Thanks for the suggestions. It might be a while before I'm building my mods again, but I'll get at least the first one in as soon as I can.

Cheers. You can find the file with the changes made here: https://cdn.discordapp.com/attachments/708120096761184386/985820442638024775/i-speak-for-the-trees_1.1.0.zip

Both features will be in the next release.