The annual Swan count has just been done and there are about 9900 of them on the intertidal plain of the Spit. The Black Swan originally came from Australia, probably blown over in storms. Then in the 1860s  more  were introduced as game birds. They thrive on the Spit as there seems to be an unending supply of zostera (Eelgrass) for them to eat. Last year there were about 6000 Swan and there have been up to 14000 in the past.