Long-term associations between Merino ewes and their offspring

The association between 10 Merino ewes and their offspring, born in 2 consecutive years, was examined over a 2.5-year period. Recognition tests were conducted and indicated a rapid decline in ewe-motivated association commencing 3–6 weeks after parturition. Field observations examined the spatial relationships between ewes and their offspring and between the two descendants of the mother. Evidence is presented to suggest the maintenance of long-term (> 2.5 years) associations between lambs and their mothers. This association appears to be caused entirely by the offspring's attraction to its mother.