I drew some birds I think would suit some of the detco characters. (Not all of them yet, but I'm open to suggestions too!)
Brown-eared bulbul (AKA Hiyodori) - They have a strong sense of territory and cry very loudly, which could drive away other birds or annoy people. They remind me of Heiji & Kazuha mainly bc of their loudness haha (the screeching is endearing). They’re constantly bickering with each other, so to an outsider it may sound like they’re fighting/being obnoxious, but they just communicate very enthusiastically, and they’re otherwise quite nice. Bonus bc hiyodori are omnivores and contribute to pollination — I’ll connect that to being resourceful/helpful. They also eat camellias/cherry blossoms, and their crest puffs up like a crown, so I think they look quite cute in photos. (I made the feathers a bit dark but I'll fix that later).
Sparrow - My immediate thought was Kazuha again, bc the way they hop around remind me of her cheerful personality. They’re also considered bringers of good fortune, which I think Kazuha definitely is, bc her omamori helped save Shinichi once.
Magpie - Fits Shinichi bc of notable intelligence. It can make tools, work in teams, imitate human speech, and recognize itself in a mirror. (The last two parts I thought were similar to Conan’s voice changer + Shinichi still being able to hold on to his identity despite someone else reflecting in the mirror). Magpies also belongs to the same family as crows, which I love bc more parallels between Shinichi and the BO + Renya hehehehe. They will also peck at people’s eyes if they feel threatened, which I think fits Conan being a general menace to criminals.
BO members as crows - I was stuck on this, bc it seems like the BO uses crows & ravens kind of interchangeably, but I think crows may be more appropriate for the lower-level members. Crows tend to gang up on larger birds in mobs, harassing and dive-bombing them, which could fit the BO’s tendency to meddle with all parts of society/gang up on vulnerable people. They’re highly opportunistic as well.
Cuckoo - Though it’s a common symbolism for parasitic relationships, apparently in Japanese culture it can also represent mourning and melancholy. It could represent Shiho’s distorted self-image as someone who doesn’t belong anywhere. Her parents were loyal to the BO, yet she grew up to be a traitor. Even as Haibara, she knows she’s not a real child. She’s not innocent, even if people approach her that way, and she feels like she’s leeching off of their naive compassion. (Ignore the bad shading in the second photo - I was messing around with layering/color theory. As for the third photo -- I really like Hokusai's depiction of cuckoos. Specifically this work, because the cuckoo is tipped downward at a steep angle, like a plane about to crash. The mouth is agape and eyes are blown out. I can’t tell if it’s happy or just accepting its fate. All of that, with a background of a faint rainbow, probably after a heavy rainfall. Kinda post-BO-takedown!Haibara-coded. She survived the aftermath, but it's a lonely relief.)