6 Surprisingly Helpful Invasive Species

Not all non-native species are totally terrible! Here are six of them can actually do more good than harm.
chapters
BROWN TREE SNAKE Credit: Pavel Kirillov
0:15
HORSES
1:40
WILLOW FLYCATCHER Credit: Dominic Sherony
2:49
TAMARISK SHRUB
2:59
HONEYSUCKLE
3:59
4 EUROPEAN GREEN CRAB
5:59