First up we have King and Gold. Gold is [now a burrowing owl. Bit of a retcon but ultimately doesn't change much]. Unfortunately I didn't have a lot of information to work with to decide what he should be but figured he's decently smart and strong like his dad but admittedly those are headcanons so I understand if you disagree.
King is an interesting one. I'm seeing how well hybrids work in this world and if I should go back and change someone to also be a hybrid or if I should drop the idea altogether. As of now King's a crowned eagle/jacana mix. Jacanas are one of the best bird dads in the animal kingdom, taking care of his babies the moment the female lays the eggs and dips. They sometimes even adopt orphaned fledglings. Crowned eagles are considered the largest bird of prey, and they will fly off with anything they can fit in their claws even if it's as big as them (imagine what a human sized eagle could do). This type of eagle is also crowded so obviously I had to give King his crown. Physically he's more eagle but instinctually he's more jacana, he has a jacana sized tail and the hunting instinct of an eagle though.
Next up, Navy and Orchid. Orchid is a cardinal. Cardinals signify a visit from a deceased loved one as well as hope and comfort. While I'm at it, here's a look at how I think ghosts look in the stick world (at least to the living, other ghosts can see more detail).
Navy is a cuckoo, one of the worst bird parents, they leave their eggs in the care of other bird families so they don't have to do the hard work. Of course he couldn't do that because Orchid wouldn't let him. Remember how I briefly bought up avians having their wings docked? It's a medical procedure only used in extreme cases where a permanently grounded stick has the main part of their wings removed to at least be able to use them for their claws (even if one is still healthy it's better mentally to have them both removed). Of course this can seriously mess with the stick's instincts and in extreme cases, like Navy's, causes them to try to denounce their bird half entirely. Of course Navy insists he's perfectly fine and that his messed up instincts aren't exasperating his already existent anger issues or anything.
Last but not least, our lyrebird Purple. She's been on quite the journey through her life. Obviously the canon stuff is still canon, there's my universal headcanon that Navy insisted she was male because he wanted a son and she kept using male pronouns until the last few years. On top of all that, Navy insisted that he's been a better fighter since he docked his wings and even tried to convince Purple and Orchid to do the same. Obviously Orchid refused but still taught herself and Purple how to fold their wings and use their claws in a similar manner. Everything was relatively okay, despite Navy's anger and Orchid's sickness, until Purple's wing broke, leaving the kid grounded before she could even fly once. She finally agreed to have her wings docked because what's the point in having a dead wing dragging you down. Newgrounds happens a couple years later and she loses one of her claws from a direct fireball, Navy ran off never to be seen again, Purple was orphaned, found Minecraft and started her little kingdom, same as canon but now with a sweater to hide her wings. Green and Blue found her and didn't say anything about her lack of wings because they're always around a wingless stick (Orange) so to them it's normal. Purple got her elytra and is able to fly but it's not the same as flying with your own wings (she also kept the sweater on in the End so the cg didn't see her wings). Normal canon events happen for the rest of the series until season 3, where while fighting Red and Orange in the PC she finally uses her wings in combat, leaving tears in her sweater. It fully shreds off by the time Green takes her elytra and she runs off to the noteblock world, where Green gets (most of) her story. King arc concludes, King adopts Purple, Purple has friends and a support system (and a therapist). Everything is good. Then season 5 happens. Her elytra breaks and it feels like losing her wings all over again. She lashes out at Yellow for causing all of this but does apologize later. One Farlands episode later and she discovers the Aether.
There are still a few miscellaneous characters to draw, Mitsi, mercs, cdg, so let me know if there's still someone you want to see as a bird. As always suggestions are welcome and don't be afraid to correct me on something. I've already thought of new designs for the cg (nothing drastic) so I'm definitely doing scene redraw type art after I get these designs out.
