Super Mario World/Enemies/Swooper

Swooper is a little bird that nests on the ceilings of caves. When Mario comes close, Swooper flies down to a medium height and continues flying on a straight line. Invulnerable to jumps, fireballs kill it and Yoshi can eat it.

Super Mario World enemies
Enemies
Para-bomb - Para-goomba - Fishin' Lakitu - Lakitu - Spiny - Bob-omb - Wiggler - Sumo Brother - Pokey - Monty Mole - Bullet Bill - Amazing Flyin' Hammer Brother - Super Koopa - Jumpin' Piranha Plant - Volcano Lotus - Chargin' Chuck - Rex - Mega Mole - Banzai Bill - Dino-Rhino - Dino-Torch - Koopa - Blurp - Porcu-Puffer - Urchin - Rip Van Fish - Torpedo Ted - Spike Top - Swooper - Buzzy Beetle - Blargg - "Boo" Buddy - Fishin' Boo - The Big "Boo" - Eeries - Dry Bones - Lil' Sparky - Bony Beetle - Hothead - Thwomp - Thwimp - Ball 'n' Chain - Grinder - Magikoopa - Fishbone - Reznor - Ninji - Mechakoopa
Bosses
Iggy Koopa - Morton Koopa - Lemmy Koopa - Ludwig von Koopa - Roy Koopa - Wendy O. Koopa - Larry Koopa - Bowser