Woodchat
Cogito ergo sum
Dont know about rare - its an absolute MEGA!
There have only ever been three sightings at Upton Warren and I have yet to meet anyone who is convinced by any of them.
The last sighting was in 1986 when the annual report simply stated "a bird thought to be of this species was seen in the Spring".
All I will say is that, without a visual description to support this claim, it is probably inadmissible as a credible record. However, please understand that this is not to detract from the competence of any of the observers. In the recent past I have been convinced that I've heard the distinctive nasal 'tzaarr tzaarr' call of a Willow Tit in the education reserve only to be disapointed when it turned out to be one of the very varied calls of a Great Tit.