Seems like a pretty long bow to draw, to compare Moa and deer and come to the conclusion they had a similar impact on the bush.
They might have a similar browse height but the crucial thing when comparing the two is population density and range. Just because they may have browsed similar things and to a similar height doesn't mean the impact they have is the same.
Im no expert but id say comparing the impact that todays extremely high deer numbers have on the bush, with a species that was hunted to EXTINCTION using primitive weapons and skills is comparing apples with oranges. For Moa as a species to be hunted to extinction there is just no way they could have been as widespread and established as deer are today.
Bookmarks