Just a wee update on things here.
12 pairs went down within 5 days of each other, great so far.
3 pairs were empty.
1 pair was filled but the pair didnt incubate them fully.
2 pair lifted
1 pair had one hatch and the other didnt hatch
2 pair have 2 young in the nest.
1 pair kicked the 2 young out the nest, killing them.
2 pair kicked 1 out the nest.
and now i,ve just got rid of a realy small young bird, not strong enough.
So now i have 6 young birds out a possible 24 = 25% success rate, bloody nightmare. I,ve now opened the boxes, that have young birds in them, giving the parents their freedom (which i think has caused the problem). When the others lay for the second time, i,ll open their boxes up as well. I just hope that i,m in control of my bad breeding so far. Time will tell.
cheers, alex. :-/