A pair of gay swans, who have built a nest together two years ago, could soon become doting foster parents. Despite their long relationship, staff say they are liable to have hissy fits when they fight with each other.

They are nested at Abbotsbury Swannery in Weymouth. It is the only public colony of swans anywhere in the world and the two cobs are in the middle of 150 nests with pen ( a female swan) and cobs on.

The pair engage in mating and breeding behaviour that relicates that of a heterosexual swan couple.

They are sexed and tagged at birth so we knew they were both males. It is really sweet.Swans have been at Abbotsbury for thousands of years, dinig on eel grass and rearing their young on the freshwater streams.

The babies start hatching in May, so hopefully we will beable to make this couple foster parents very soon.

Here are some other cases of homosexual animals:

Bisexual love triangle, at San Francisco Zoo. Harry, a Megellan penguin set up home with anther male penguin to incubate an egg. He later left his partner for a female penguin.

Lesbian albatrosses in New Zealand had their first chick in February.

A gay penguin couple in a German Zoo have had a chick and are now rearing it as if it was their own. There are another four homosexual couples in this zoo.