| Approximate Year of Event | |
| 80000 B.C. | Estimated era of human/feathren evolutionary divergence. |
| 50000 B.C. | Feathrens now have wings. Most live in and have adapted to high altitudes in mountain ranges. They have also perfected
early, basic musical instruments. |
| 28000 B.C. | The Neanderthals disappear. The earliest feathren shamans, believers in mystic powers and gods that inhabit the skies, have a strong grip on the feathren council and dictate most new decisions. |
| 25000 B.C. | Feathrens begin to construct sprawling mountain cities in the Himalayas. Most feathrens migrate to the mountain range |
| 20000 B.C. | Evidence suggests that the feathrens have a worldwide, but sparsely populated empire in the northern hemisphere. Because they are not bound by landmass as much as humans are, this is made possible. Feathrens
likely flew longer distances during this era, meaning that they must've had more powerful arm muscles at this time. |
| 15000 B.C. | Primarily due to the ice age, the feathrens lose much of their empire and converge almost solely in western Asia. |
| 10000 B.C. | The feathren empire grows and develops from a centralized location. They have pushed technology about as far as it can go without the advent of electricity. |
| 5000 B.C. | The feathren kingdom is devastated by over population, a corrupted political structure, a series of storms that badly damage their cities, avalanches and rock slides, and widespread disease and famine. Their numbers dwindle to half that of their peak. |
| 4000 B.C. | The world's only known zephyronite mine is discovered deep under the Himalayas. The number of shamans begin to wane quickly, and they lose political power. |
| 3000 B.C. | Still living among a crumbled empire, the remaining feathren council decides to flee the ground forever as humans (who are entering the Bronze Age at this point) are becoming a threat. The feathrens sever what few remaining ties they have to humans, and begin constructing the Sky Cities, mostly by scrapping their land cities. They perfect zephyronite mining and use the gravity-defying rock to lift their constructs into the sky. |
| 2500 B.C. | After several failures, the first sky city finally takes to the air. The exodus from the surface world begins. |
| 1000 B.C. | The last of the permanent settlements on the ground vanishes. Mountain farming begins across the world. There might be as many as a dozen sky cities orbiting the planet at this point. |
| 500 B.C. | Several sky cities encounter a monstrous bird called the ravel in Norway's mountains. After several destructive attacks from the birds, the feathrens fight back and come to believe that the species has been wiped out. |
| 200 B.C. | One of the more militaristic sky cities is considered "rogue" and stops following its ordered route. It is believed to of had spent time above Peru and interacting with the native humans, likely resulting in the creation of the Nazca lines in their effort to communicate with the feathrens. |
| 500 A.D | By this point, a number of disasters have hit the sky cities, sinking some into the ocean and causing others to crash into mountians. Surviving refugees regroup in other cities, adding to their already saturated available land. |
| 1000 A.D | The number of sky cities has dwindled to a mere five. The shamans have lost nearly all of their power, and become a small group; a stark contrast to their once almost-total political dominance. |
| 1500 A.D | Only three sky cities remain, with the largest being the one in Sky People. Electricity is discovered and implemented in the remaining cities. The feathrens also have a new age of culture and art, despite the difficulties their people are facing. |
| 1600 A.D | Alveria is born and becomes one of the most well respected kings of the feathrens of all time. He has two children. |
| 1630 A.D | The daughter of Alveria flees the kingdom, leaving his son as the next in line. She, and her followers, construct a massive city under France. |
| 1650 A.D | The last direct full contact (a historian made aware of the feathrens) with any humans recorded in feathren history. The second to last sky city crashes into the larger one and plumets somewhere in Europe. |
| 1899 A.D | King Tegra is born. The feathrens have also mastered machine flight by this point. |
| 1912 A.D | A ravel egg is discovered and brought to the kingdom. The chick hatches, but dies within hours. |
| 1918 A.D | World War One ends. The last of the feathrens in France's underground kingdom die off or leave, never to return. |
| 1929 A.D | The stock market crashes in America, bringing about a depression that affects the entire world. Tasza and Fedo are born around this time. |
| 1939 A.D | Poland is invaded by Nazi Germany. Feathren scientists have discovered that the zephyronite core is losing strength and the kingdom is slowly losing altitude. This can be considered the greatast crisis in feathren history, as the feathrens will disappear forever if their last kingdom is lost. |
| 1940 A.D | Jacob Holswell is shot by German pilots. In December, Tasza and Fedo fall off the kingdom, and the events of Sky People begin... |
