spotting bonito & albies VS. Bluefish

[ivanputski]

Fishing point judith / harbor of refuge from boat quite often in August... When the albies & Bonito show up, How can you tell if its blues or albies in the area? Im asking because i recently was following birds at a distance that were sporatically diving and working a pretty wide area... I was casting a needle eel to the area, but zero hook ups... now if there were blues, I think I would have picked one up... How can one determine if birds are following blues or albies? I was also letting other charging boats drive them in my direction as i drifted with motor off, but still nothing...