I've done everything I can find to do in levels 1 (Three Feathers) and 2 (Five Keys), and I've checked all the walkthroughs.
Supposedly you should get a Feather card and a Key card when you finish these levels, but I don't. I do however get the Three Babies card when I finish that level.
In Level 1, I collected 10 cards BEFORE getting Branbora, if that helps.
Am I misinformed, or is there something more to do? (Where can I find a COMPLETE list?)
Best Answer
Finally, I've found a walkthrough that contains accurate and precise information on all 123 cards: http://jayisgames.com/archives/2012/04/botanicula.php#prettyPhoto
Click on the link and scroll down to see the walkthrough. What I found most useful is the complete set of images for all 123 cards. They are not named, so the images themselves are handy but I can't place them here (thus the link). It is useful for getting all three gifts at the end of the game.
Other walkthroughs give Czech names to the cards, but do not present a complete list. One walkthrough even mentions a Feathers card and a Keys card, but no such cards exist.
COMPLETE LIST OF CARDS
Three Feathers: 11 cards Hiding spider (Balonek); Red flying bug (Bzukavec); Green falling bug (Soukac); Shell kid (Ulita); Mayfly (Jepice); Tall pods; Green worm (Strasilka); Moth bug; Undead pair; Flowering twigs; Flying potato creature (Brambora).
Five Keys: 18 cards Magic mushrooms; Snail; White cell; Singing birds; Grampa #1; Woodpecker; Tiny leaf bug (Brouk); Fat beetles (Parazit); Musical creature (Orchestrion); Dog creature; Spiky creatures; Little pink nut-man (Tykvovec); Hoppers (Hopik); Big-nosed green ball guy (Nosal); Stick insect ; White fly; Bee; Spiky big-head zombie.
Magic Lamp: 6 cards Genie (Dzin); Musical caterpillars; Santa; Moon; Ferris wheel carney; Black spider (Zlo A).
Three Lost Chestnuts: 21 cards + upgrade Headless bug; Black spider with eye; Hungry caterpillar; Walking thread (Pidalka); Hungry leaf (Zrout); Singing frogs; Crabby; Otter creature (Svolavac); Fish-rider; Scissor crab; Tree squirrel (Skakavec); Leafsucker bug; Snail engine; Hanging bat; Mean spider; Sheep; Long-winged fly (Jepice 2); Stretchy bug; Angry beetle; Guinea pigs; Chestnut family; (Grampa #2).
Fourteen Chickens: 25 cards Bee hive; Meditating chestnut; Created frog (Zaba); Created snail (Snek); Sleeping chestnuts; Scientist chestnut; Snow chestnut; Snowman; Penguin (Tucnak); Ballplaying chestnut; Fat sleeping chestnut; Shadow pets (Skritci); Grumpy sleeper; Toast creature; Closet moth (Mura); Jack-in-the-box (Krabicka); Walnut herd; Cap Stork; Priestess chestnut; Ant; Ant larva; Shaman chestnut; Undead daddy chestnut; Cuckoo (Kukacka); Flying lightbulb (Zarovka).
Flying Ship: 3 cards Chicken; Red spider (Zlo B); Chestnut town (Mesto).
Four Elements: 32 cards + upgrade Grazing worms (Krava); Chameleon; Sponge sheep; Running creatures; Theater (Loutky); Devourer; Turtle (Zelva); Hornblower; Toothy black creature; Planets (Vesmir); Glowworm; Suspended lamps; Puffy lamps; Baby (Nosatec); Stag (Jelen); Black/Green worm; Rocking fungi (Hlavouni); Circus; Bouncy hedgehogs (Kedlubny); Yellow submarine; Black swimmer; White slug; Rock crabs; Shining lamp jelly; Glowing tentacle jelly; Peanut creature (Burak); Ladybug race (Zavod); Black leaf; Eyeless creature (Hrouda); Daredevil (Krotitel); Devourer tamer; Templemaster; (Grampa#3).
"Heart of Darkness": 2 cards Four Discs; Red Organ (Zlo C).
Five Spheres: 5 cards Black sealilies; Black gobbler; Black leech; Red monster; Black beaks.