The inaugural recipient of the award two years ago, Sybil MacPherson, described this year's winner as 'one of nature's true gentleman' as she presented the quaich at the regional AGM.
At the age of 94, Mr McKirdy is still active looking after sheep and training dogs for sheepdog trials.
Sybil said: 'He is someone of outstanding strength and vigour of body, mind and spirit; loyal, reliable and hard-working.
'Sandy is never one to blow his own trumpet. But very few people will have spent over 80 years tending sheep. Fewer still with his level of knowledge, interest care and dedication. And none with Sandy's ability to 'ken' sheep. What a gift for a shepherd.'
"attachment_159650" "" "278"]
Sandy started farming with his father at Dunagoil Farm on Bute, worked as a shepherd in Argyll before spending almost 40 years shepherding for Bute Estates and the Marquis of Bute.
He retired at 65, but Sandy keeps a daily routine checking on ewes and hoggs while training sheepdogs for the local trial.
The Stalwart Award was created in 2016 in memory of Mull’s Bert Leitch and Lachlan MacLean. Both men, who represented NFU Scotland regionally and nationally for many years, sadly passed away in 2015.
The award is presented annually to either a NFUS member who has given time and effort to the union's work in Argyll and the Islands, or someone who has made a significant contribution to agriculture in the area.
Regional chairman John Dickson said: 'The true measure of someone considered a stalwart is the respect and admiration they get from young and old. The fact that Sandy’s advice continues to be sought after and valued underlines the esteem in which he is held by his fellow farmers.
'There cannot be a worthier winner and I am sure Lachlan and Bert would be in full agreement.'
The ever-modest Sandy joked: 'I didn't expect this. I wouldn't have got it if I hadn't lived so long.'
Yes! I would like to be sent emails from West Coast Today
I understand that my personal information will not be shared with any third parties, and will only be used to provide me with useful targeted articles as indicated.
I'm also aware that I can un-subscribe at any point either from each email notification or on My Account screen.