When I started, the game window was partly cut off on the right side so that I could not see all the plants over there. As soon as I started to resize the browser window, the game adjusted itself to fit the window.
The game could use with a tutorial, or at least some basic info on the game page. I've played games that are similar enough to this that I was able to muddle my way through, but never felt like I had the time to fully understand everything. I did start by pausing to skim everything, but tooltips don't really describe how things work in action. By the end I had a basic understanding of how to win, but did not feel invested in the game.
The message log felt like it faded too quickly, especially as I was learning things and constantly trying to look at other things in more detail. Considering the right column does not use up the full height, I would suggest increasing the size of the log area so more messages can be shown at once, and letting them remain for longer.
For my playthrough I didn't even register the goals, and only barely glanced at the current population stats. I focused on the eagles as threats and once I had enough put down some protection. I then worked to place a bit of everything out, figuring even if I did not fully understand, a balanced ecosystem is important. Then I spread out the protective ferns over much of the west side, and sprinkled the other things among them, other than the decoys which were mostly placed a bit east of cent, or near the eagles if they were attacking. My final score was 30 Moa, 1432 Mauri earned, with 662 remaining, 182 seconds, and a score of 41 points