Friday 20th November comments: The season continues to change and the number of pups has now peaked across the colony but it’s not all sweetness and light…the boys (known as bulls) are here.
Slowly and surely the Bull seals, some weighting as much as 40 stone have been arriving on the colonies with only one thing on their mind…its soon the mating season. Bulls will defend a harem of cows with violent fights and serious injuries common place. Towards the end of the lactation (about 20-21 days) the cow seal will become fertile and will mate although implantation is delayed for up to three months.
The gestation period is nine months and the end result is of pups being born at the same time of year each season. You can’t take your eyes off the colony on the Isle of May but gradually things will be starting to slow down and the seal season will be over for another year.