My first shiny was an Abamasnow in Pearl. I caught it because it looked funny. I didn't know what shinies were at the time.
I went backwards and played Fire Red, Leaf Green, Sapphire and Emerald. I can't remember the games but I caught a Ponyta, a Golbat and one other, I can't remember who.
This gen I wasn't an hour into my first playtrhough before a shiny Pidgey showed up.
I have managed to catch a lot of shinies this gen.
I don't like radar. I can't seem to get more than a chain of about 5. Not much better at chain fishing. Don't have the patience for hatching bunches of eggs at a time.
Almost all of my shinies are from friend safaris or random encounters or hordes.
I've caught several while hunting for HA pokemon in hordes.
I have hatched 2 shinies this gen an Oshawatt and a Vivillon.