Well, they say to look for birds when you fly fish for dorado anyways...
In a recent clip from Reds Fly, a group of guys are fly casting to a large school of dorado around Baja when one finally hits their streamer.
What is funny about the whole situation is that it seems the only reason these fish are even in the area where these guys are trying to fly fish for dorado is because a dead pelican is floating above them!
In a recent interview with Darcie Arahill, she mentions that finding anything floating on the water can often times mean that a school of dorado is below. Apparently she was right!
This technique of looking for something floating on the surface works for freshwater fish as well.
If you ever find yourself fishing a large school of suspended baitfish, anything floating on the surface can sometimes attract them to a specific area, which in turn, brings in the predators like a buffet line.