In Warframe, you will need Common Avichaea Tags to rank up with the Entrati Syndicate. To get them, you will need to get stuck into some animal conservation on the Cambion Drift on Deimos.
What you need
To catch the Common Avichaea, you will need to visit Son in the Necralisk and pick up some items. First up you will need a Tranq Rifle that you can purchase for 500 Standing. You will also need to purchase an Avichaea Lure from Son for 1000 Standing. The good news is that you do not need any Pheromones to catch this species of Avichaea, as it is the most common one you can find.
How to capture a Common Avichaea
Head out to the Cambion Drift, and get out your Tranq Rifle. Switch to the Avichaea Echo Lure so that only those sites will appear on the map, then travel to one of them. When you get there, find the animal scat and interact with it, then follow the trail.
When you get to the nest, use the Echo Lure, then repeat the Avichaea’s call and switch back to the Tranq Rifle. This is where it gets a little awkward, as the Common Avichaea is a flying animal. This means it appears in the sky, not on the ground. Depending on your location, you may need to climb up to see it, and it won’t be the easiest shot to make with the Tranq Rifle. Wait for the Common Avichaea to start hovering somewhere, then hit it with a tranq round. It only takes one to catch this particular animal.
Don’t forget, Warframes with invisibility make animal captures much easier, as the animal won’t know you are there.