Loch Gruinart is perhaps one of the most beautiful parts of Islay offering stunning views combined with unique wildlife, rare birds and thousands of geese in the wintertime. From the parking close to the bird hide a track takes the visitor through some sheltered woodland offering nice views over the loch, good birding opportunities and viewing platform.
RSPB Loch Gruinart Nature Reserve lies to the north-west of Islay and covers some 1600ha. It is a special kind of nature reserve because it includes a working farm - in fact, the biggest in-hand farming operation on a nature reserve anywhere in the UK, and possibly in Europe.
There is something to see year-round at the reserve. Some say the most spectacular time to visit is in October when internationally important numbers of barnacle and white-fronted geese return from Greenland for the winter. At the same time, brent geese and whooper swans fly in from Iceland and stop for a day or two's rest before heading onwards to Ireland. This is also a good time to see birds of prey - hen harriers, sparrow-hawks, merlin, peregrine and golden eagles. Redwings strip bare the berries on the rowan trees, flocks of small birds feed in the autumn stubbles, and choughs pull apart cowpats for dung-beetle larvae.
https://www.islayinfo.com/islay_rspb_loch_gruinart.html