A sheep shearer is a worker who uses (hand-powered)-blade or machine shears to remove the wool from domestic sheep.
In the case of powered shears, the movements were largely devised by Godfrey Bowen approximately 1950 , by or the Tally-Hi method. In 1963, the Tally-Hi shearing system was developed by the Australian Wool Corporation and promoted using synchronised shearing demonstrations. Sheep struggle less using the Tally-Hi method, reducing strain on the shearer and there is a saving of about 30 seconds shearing each sheep. When finished, the shorn sheep is removed from the board via a chute in the floor, or wall, to a counting out pen, efficiently removing it from the shed.
The latest shearing patterns which are used by some of the most efficient shearers around the world, world record holders, world champions, etc. have less blows due to better sheep control and positioning. These patterns ensure that there is less strain placed on the sheep and the shearers due to the advanced techniques used.
A professional or "gun" shearer typically removes a fleece without badly marking or cutting the sheep in two to three minutes, depending on the size and condition of the sheep, or less than two in elite competitive shearing. Shearers who “tally” more than 200 sheep per day are known as “gun shearers”. Gun shearers using blade shears can achieve much lower numbers, about 50 to 70 a day.
In 1984, Australia became the last country in the world to permit the use of wide combs, due to previous Australian Workers Union rulings.
While Howe's weekly aggregate record remained until at least 2005, his daily record tally was broken using machine shears by Ted Reick in 1950. In competition sports shearers, using blades or machine driven hand-pieces, can achieve short-term rates that are greater than for day shearers.
Dwayne Black holds an incredible six world records, mainly in the endurance or marathon events. In April 2005, he spent a gruelling nine hours shearing 513 merino ewes, six more than the previous world record
On 2nd March 2007, Broomehill shearer Brendan Boyle set the world 24-hour sheep shearing record by shearing 841 full wool merino sheep, and in the process raised over $20,000 for the fight against prostate cancer. It was the first time a record has been set in 24 hours sheep shearing. A great effort, but for the record to be officially recognised, it needs to be overseen by the World Sheep Shearing Records Committee. This committee has a set of rules, and official referees in three member countries for the specific purpose of ensuring records are set under the same rules and consistent referees in these countries.