If you have posted your session or sighting and want to edit it, you can do so by following these steps:
Find your session either in the feed or go to your profile and click "View Sightings" or "Sightings".
Tap the three dots in the top right of your session or sighting.
You will be given the option to Share, Edit or Delete your session or sighting. Tap the Edit button.
You can add notes, add photos, change the species and even number of individuals.
When you're finished editing, tap the 'Save' button at the bottom of the session or sighting and your edits will be saved.