The programme is available on iplayer here and the piece is about 23 minutes in.
As we begin the month of February, our minds turn once again to the coming breeding season.
With luck, this will be our pair's eleventh season together.
The nest platform was put up in 2006 and we were amazed that our female laid her first clutch of (three) eggs on the gravel within weeks of its installation.
Every year since she's laid four eggs making a total laid of 39 to date.
Of these eggs, two failed to hatch in 2007 and one in 2015, leaving a total of 36 that did hatch.
Of the 36, two chicks died in the nest in 2010 and one in 2014.
So the total that reached fledging age was 33, a remarkably high average per year of 3.3.
|Derby Cathedral and tower as seen from The Assembly Rooms car park|
In 2009, one female was found dead soon after fledging and another female injured herself and has been kept in captivity ever since. Her brother was found in 2013 in Nottingham with a very similar injury and he too is now being looked after in captivity.
|A recently fledged juvenile in 2011. Photo: Jon Salloway|
One of the two females that fledged in 2007 was seen nesting on a cliff in Yorkshire in 2014 but we have yet to be 100% confident about the exact number on her orange colour ring. Someone read it once as being 002 but we would have liked to get other sightings to confirm this. The difficulty is that she is difficult to approach and the nest is in a very hard place to see.
|A juvenile on the ledge above the nest platform|
|Three youngsters 'ready to go'.......|
As to dates that the first egg was laid each year from 2007 (the first year the cameras were in place), they became earlier but then rather later:
2006 no cameras present but probably last April,
2014 29/3 and
So, there's much to look forward to as the 2016 season starts to happen!
The Project Team