The 1960s brought an awareness of an emerging environmental crisis. This crisis captured the attention of poets and led to the creation of ecopoetry. Ecopoetry can then be separated into three large categories: nature poetry, environmental poetry, and ecological poetry.
The Canadian Geese migration is one of those amazing feats of the natural world. When you think about this, and then watch them fly in their V formation, it makes sense that poets would incorporate them into their verse. Mary Oliver and Wendell Berry are two poets who took note of these birds and incorporated it into verse.