Practical management at tupping has a beneficial impact on both the profitability and practicalities at lambing. Effective and reliable marking lets you know which ewes have been tupped, by which ram and when! Barren ewes can be identified which saves winter feed costs, and ewes can be grouped by expected due dates. Tight grouping at lambing time can save labour and stress which leads to improved lamb survival at lower costs. Using a range of colour crayons, changed regularly also allows spotting of rams that are perhaps underperforming.