Falcons Are Closer to Parrots Than to Hawks
Falcons look like hawks and hunt like hawks, but genetically they're closer to parrots and songbirds. Their raptor features evolved independently — textbook convergent evolution.
Flamingos, once lumped with storks because of their long legs, turned out to be the closest relatives of grebes. Hummingbirds and swifts share an ancestor despite one hovering at flowers and the other being among the fastest birds in level flight. Corvids — crows and ravens — use tools and solve multi-step puzzles.
The IOC World Bird List, built on decades of DNA reclassification, reshuffled the entire bird family tree. Flightless birds tell an ancient story: ostriches, emus, and kiwis descend from flying ancestors across different continents as Gondwana broke apart.
108 birds from ratites to songbirds. The answer is rarely where you'd expect.
Did you know?
- *Falcons are more closely related to parrots than to hawks or eagles, despite looking and behaving like classic raptors.
- *Flamingos' closest living relatives are grebes, small freshwater diving birds that look nothing like them.
- *Kiwis are more closely related to the extinct elephant bird of Madagascar than to their geographic neighbors, the emus of Australia.
- *The peregrine falcon can exceed 240 mph in a dive, making it the fastest animal on Earth.
- *Crows and ravens can use tools, recognize human faces, and pass grudges to their offspring.
What is GuessKin?
GuessKin is a free daily guessing game built on real-world taxonomy. Choose from over 20 categories and try to identify the mystery bird. Each guess reveals how closely related your answer is to the target through a shared classification tree.
How does it work?
Every bird in GuessKin sits on a taxonomy tree — a branching hierarchy that shows how things are classified and related. When you make a guess, the game shows you the nearest common ancestor between your guess and the answer. The closer that ancestor is to the answer, the warmer you are. The tree visualization grows with each guess, narrowing down where the answer lives and helping you triangulate.
How to get the best score
- •Fewer guesses is better. The ideal game is guessing it in 1. Every guess counts against your score.
- •Speed matters too. The timer starts on your first guess. Quick, confident answers are rewarded.
- •Read the tree. Each guess gives you real taxonomic information. Pay attention to which branch the answer is on and which branches you've already ruled out.
- •Start broad, then narrow. Your first guess splits the tree. Pick something that gives you maximum information, then drill into the revealed branch.
Each GuessKin category uses a real classification system. These aren't made-up groupings — they're the same systems scientists and specialists actually use. New categories are added regularly. Every category is free, with no accounts and no ads.