-( This trophy is chapter-specific and relates to: Chapter 1 )-
Throughout the first chapter, you will find the skies and often some of the terrain are littered by seagulls. Furthermore, there will also be some nests near your traveled paths. To obtain this trophy, simply do not walk/run into any of the nests, preserving the seagulls and their offspring. You should obtain this trophy once you've scaled the large tower to send your shout and awaken the three orbs (thus watering the great tree below).
If you obtain this trophy at a different point of the chapter, let me know so I can try to narrow down the specifics and hone the solution for later players of the game.