Complex sentence: Early Audubon society members pledged to shun the fashion-of-the-day of wearing hats and coats adorned with bird feathers and wings, and to hunt birds for consumption only, rather than sport or trade.
Split into simpler sentences: Early Audubon society members pledged to shun the fashion-of-the-day of wearing hats and coats adorned with bird feathers and wings. They pledged to hunt birds for consumption only, rather than sport or trade.