A swan has lost its lifelong partner after it was attacked by a dog at Witney Lake.
Since the attack, only one swan and the cygnets have been seen in the area.
This is deemed to be very unusual as swans will almost always stay together as they mate for life.
A search for the missing adult swan has not been successful and the likelihood is that it was killed in the attack.
READ MORE: £65k piece of industrial kit stolen from Oxford city centre
Witney Town Council said it is in touch with Oxfordshire Wildlife Rescue which is helping search for the missing mate.
A town council statement said: "In the meantime please be incredibly careful, and keep dogs on leads around the Witney Lake.
"This attack was entirely avoidable.
"Dogs act instinctively and as owners it is important to be aware and keep local wildlife - and your own pets - safe from sudden attacks and prevent dogs entering the river which is heavily polluted with sewage."
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules here