Hard Working Mums

Isle of May National Nature Reserve

Tuesday 17th November comments: It’s been a busy month or so as the island has transformed into a major Grey Seal nursery since late September. Whilst we worried about the lack of seals present in mid-September, we are now full into the seal breeding season and numbers have peaked across the colonies.

In recent blog posts we’ve been focussing on the pups and bull seals, but we should also take our hats off to the cow seals who actually do most of the hard work. Female Grey Sealsare called cows and can be between 1.6–1.95m (5ft 3in–6ft 5in) long and 100–190kg (220–420lb) in weight. In the wild bull seals live on average for 25 years but females can live well beyond 30 years of age. Cow seals give birth to a single pup between mid-September and mid-December. They will wean their pups for18-21days and although the pup gains almost3lbs…

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