Thanks to everyone who offered advice. This was a skive from a business trip to Boston - five hour easy drive from Boston, stayed at the Days Inn for $50 a night - the nice hotels near downtown are $200. I was mainly looking for warblers and other passerines, as opposed to raptors or shorebirds. The town itself, Bar Harbour, has a surprisingly lively "downtown" and nice food, music places. For the birds i mainly stayed around "the wild gardens of acadia" and environs. In other areas there were few gulls , waterfowl or shorebirds. However there were good numbers of wood warblers in the wet and dry woodland, and in the beaver-made swamps. Birds were mostly located on call but since i dont know many american calls, i then had to eyeball them to id them - an interesting exercise - distrubed a very scary looking snake tramping through undergrowth at one point - i didnt think snakes lived so far north and on an island(?) The restaurant at Jordons pond is highly recommended. The weather was balmy with few biting insects.
Birds seen (apart from very common species) were:
broad-winged hawk*
osprey
common loon (gnd) with chick
common eider
peregrine
chimney swift
hairy woodpecker
pileated woodpecker (heard)
eastern wood peewee
another alder or willow type flycatcher
american crow
raven
black-capped chickadee
boreal chickadee* (presumed latter - very strong red on shoulders but only got a glimpse)
golden crowned kinglet*
ceder waxwing
red-eyed vireo (heard everywhere but sill not seen)
yellow warbler
yellow rumped warbler
blackburnian warbler*
black and white warbler*
american redstart
ovenbird*
common yellowthroat
canada warbler* (first tick was in county clare in ireland)
least flycatcher*
black throated green warbler*
chipping sparrow
savannah sparrow
song sparrow
white throated sparrow
dark-eyed junco*
bobolink*
indigo bunting
american goldfinch (copulating)
bald eagle
kingbird
*ticks