|Black Swan (Cygnus atratus) sat on eggs.|
As I said they help endangered species such as the bird that I am covering. Well, technically it isn't an endangered species it's just one that doesn't really get seen very often.
|A dodgy iphone shot of one at York|
So, here are some facts:
- Black Swans are of Least Concern as they have a very large range but they aren't usually found in England...
- ...Following on from this, they are usually found in Australia and Tasmania. They have also been introduced, and are well established in, New Zealand.
- They are usually about 125cm long and usually have a 180cm wingspan. Males usually weigh from 3800g - 8750g while Females usually weigh from 3700g - 7200g.
- Their Latin name (Cygnus atratus) means something (contrary to yesterday's bird) very related to it. Cygnus means 'The Swan' while Atratus means 'clothed in mourning' (black) so their full name means The Swan Clothed in Black.
|Black Swan with white cygnets.|
- Yesterday I started a new fact, because I have recently been bird-ringing, about what ring size they have, in this case they have a M* ring size. (Here I'm going off Mute Swan because I can't find the Black Swan ring size anywhere).
- Around 1/4 (one-quarter) of all Black Swan pairings are homosexual. This is mostly between Males.
- Still on the subject of breeding, Black Swans are Monogamous and usually pair up for life. They do have a 6% 'divorce' rate though.
- One final word on breeding, although they are called Black Swans, their under-wings are white along with their cygnets.
- They do not a have a migratory pattern but are instead nomadic and move around in response to drought or rainfall.
- Relative to their size Black Swans have the longest neck of all swan species.
|That long neck comes in handy for getting a snack|
when you can't leave your eggs!
- The collective noun for a group of swans on the ground is a bank, but in the air they are a wedge, probably as they often fly in a V formation in flight, though they will also fly in a line.
Here are some links to some more information:
Hope you enjoyed,