In January 2017 I visited Shrewsbury. On a walk along the Severn I noticed a Carolina drake hanging out with a group of mallards and a pair of swans at what was evidently a popular spot for feeding the birds.
Flash forward to earlier this month. Again I had a stroll along the Severn between the Welsh and English bridges. There was (presumably) the same Carolina. Still looking in fine fettle. Still keeping company with a group of mallards and a pair of swans. In exactly the same small patch of the river where it had been almost three years previously.