We will be camping on Skye 3rd to 8th June. We plan to take a boat trip as foot passengers, with the hope of picking up sea birds such as Petrels and Shearwaters. Any views as to whether the Calmac ferry to Lewis/Harris or a smaller local trip boat would produce the better chances? My better half doesn't fancy too small a craft. We did Mull to Staffa a few years ago and that was a great trip.
Depends on weather quite often for Petrels (ie not calm), but getting a few of them from the CalMac ferry is usually not that difficult once out in the Minch. You're a bit higher off the water than a small boat obviously but careful scanning should pick them out. Manx Shearwaters certainly also. To be honest I think you've just as much chance either way.