The site has in excess of 100 plus boxes which have been put out by volunteer staff over the last couple of years, this years occupancy of the boxes have been the usual suspects Blue / Great Tits, Nuthatch which have recently fledged & Common Redstart also recently fledged.
The first full day visit was conducted by members of the Cardiff Ringers on 26th May 2013 with checked boxes showing an occupancy rate of 69%
The second full day was conducted on 28th May 2013 with different boxes being visited the occupancy rate of these boxes was 70%
Whilst visiting a nest box on 26th May 2013 the below was found, a possible Redstart egg amongst Blue Tits eggs
A further visit tonight and this was witnessed
A Common Redstart with A Brood of 5 Blue Tits
I have only twice in the past 27 yrs witnessed a tit nest constructed over a Redstart egg but the only time I have noticed another bird species in a tit nesr containing young was a fem Pied Fly on a brood of Blue Tits & a dead mle Pied Fly squashed down the side of a nest of Great Tits, presumably killed by a parent bird on finding the intruder.
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