There was one thread about silver and gold shinies. But I take math into common birds. What is the best way to sell them to profit the most? Since Evolution materials are hardest to obtain - I prefer to use the method below. But either way you lose Evo mats or gold. If you need gold - skip this method and sell them separately. TL;DR If you have 3*, best way is to feed him 1* and sell it. Otherwise - collect 2* and feed them 1* before selling. Let's see the math based if we feed the same color birds. 3* bird gives 3 Evo mats and 30 gold, level up cost 40 gold 2* bird - 2 Evo mats and 20 gold, level up cost 35gold 1* bird - 1 Evo mat and 10gold, level up cost 30 gold Feeding 3* with 1* or 2* makes him level 3, so it's the same outcome 3* lvl 3 gives 9 Evo mats and 36gold. So we earned 5 Evo mats and instead of getting 40gp by selling them separately, we get 36. With expenses it is -44 gold. Feeding 3* with a 3* gives you level 4. So it is +5 Evo mats and -61gold Leveling 2* with a 2* - level 4. +4 evo mats and -49 gold Leveling 2* with a 1* we get level 3 and it gets us 6 Evo mats and 24 gold. +3 Evo mats and -41gold Leveling 1* with 1*, level 4, +2 Evo mats and -37gold So. We always get extra Evo mats for expense of gold So - extra Evolution material cost: 3* with 3* - 12.2gold 3* with 2* - 13.5 gold 3* with 1* - 8.8 gold 2* with 2* - 12.25 gold 2* with 1* - 13.6 gold 1* with 1* - 18.5 gold But if you have 2x2* and 2x1*. Separately they would give you 6 Evo mats and 60gold. But if you feed 2* to 2* and 1* to 1* they would give you +6 Evo mats and -86gold, while feeding 1* to 2* - gives +6 Evo mats -82 gold. We see that gold wise best is to feed 2* with 1*. Conclusions So if you have 3*, best way is to feed him 1* and sell it. Otherwise - collect 2* and feed them 1* before selling. On the same color day it is the same, just the profit is higher. If you have Golden shiny bird - feed him once and sell. Feeding more birds just lowers your profit. Silver shiny - level up 2* and 1* birds to the level 20 and evolve them once. Then feed to the preferred bird on the same color day. I prefer to avoid 3* shinies, because they need 200evo mats and its the same as 2* and 1* shinies combined. And they level up more than 3*. (If someone has math on this - please share your thoughts). Also what's the formula with 4* shiny on level 51 giving the most xp? Doesn't 4* birds consume many lower level shinies and evolving 4* lvl 40 is a bit too much in my mind. How it is gold wise? I'm open for discussion, Enjoy!