Allow searching/filtering of observations within an individual entry.
Sometimes you may need to edit an entry and find a specific species to make an amendment. Perhaps if you've noticed you entered the count incorrectly or selected the wrong sub species etc for example. If there are a number of species in the entry it can be quite tedious to scroll through them all to find the one you need to amend.
A search bar above the observations panel would make it great just to type a few letters and find the entry you need in much the same way filtering works on the main pages.