Hi Alan, long time no see!
Although all kite sightings are welcome, it is those with wing tags which are of particular interest, for obvious reasons. However, if the numbers/letters are not easily read, at least the colours indicate the originating area.
An important observation (apart from the numbers) is noting which wing carries a specific colour. For example, does the left wing contains a yellow wing tag with a black strip, and the right wing contain a black one with a yellow strip, this indicates a 2008 Chilterns bird. Vice versa tells us it would be a 2004 bird from Wales. Hence the importance of which wing contains which coloured tag
I do, however, forward any sightings that are of potential significance to the relevant contacts in other reintroduction areas, ensuring those interested parties are aware of sightings of 'their' kites.
Bluejam - I hope to put this info eventually onto the website, it is on my list of 'things to do'!