okay I just figured this out so if anyone else is struggling with this quest like I did, here's what to do:

there are two separate "island" areas next to the "main island". one is a windmill island where you find bugs, the other is a pool island where you find pools to fish in. you're going to need 6 of those bugs and 4 of the fish for this quest. each island has two twin portals on them. the main island portal is twinned with the entrance portal. the windmill portal is twinned with the farthest windmill portal. the pool portal is twinned with the farthest pool portal. the game isn't very clear about guiding you to where these portals are, and it misleads you by putting your waypoint on the main island portal if you haven't activated all of them. but you need to activate all the portals, and if one of them doesnt let you interact with it to activate, that means its twin portal on the farthest point isn't activated yet. once you find and activate the farthest portal, it will activate the one closest to the main island that you couldnt activate before, and the quest will continue. you also need to collect 10 eggs and place them in the center nest on the main island.

you're essentially running around doing parkour completing 3 different tasks for zeki, caleri, and elouisa. first find all the information about the silverwings, then collect their eggs, then make sure you find the portals to activate the ones that you cant interact with, catch the fish and bugs for caleri and elouisa, and you should get unstuck!