To round out the info, a mini-bio...Sr. or son moved in 1883? Don't see a W. Fletcher in 1881 as yet...
In 1832 (not likely as that was his birth yr. see next paragraph)) John Adams Sr. purchased 400 acres, being on lots 6 and 7, concession 13, East Nissouri Township. His son John Adams Jr. later inherited the property, where he operated his own meat processing plant and cheese factory, known as the Adams Cheese Factory. He built a large house, locally known as the “Castle” which consisted of 16 rooms and 14 fireplaces. The grounds were landscaped with trees imported from Britain. In 1883, he moved to Toronto where he operated a Dairy. According to local history sources, he is credited with being one of the first milk producers to sell their product in glass bottles.
Born in 1832 in Troy, New York, United States, John Adams Jr. married Sarah Walker in 1853. He passed away on September 6, 1900, and is buried in Mt. Pleasant Cemetery, Toronto.
(also, he meant the number of cows perhaps- there were other milkers on that farm, as one man couldn't do that before machines...and sometimes 2 or 3 times a day)
adding: 1871 /1881 census image - no farmhands listed onsite - no likely Fletcher nearby (perhaps moved when his lease was up? Followed Sr. to Toronto business?) Just looked at request again & see you're not sure of the name Fletcher.
https://www.familysearch.org/ark:/61903/3:1:S3HT-69CS-TZZhttps://www.familysearch.org/ark:/61903/3:1:S3HY-D143-1V11851 says b. 1830
https://www.familysearch.org/ark:/61903/1:1:MWTX-Q17