Bearded Tit Update

 
The gritting  season is now almost over . To date we have recorded 153 sghtings of colour ringed birds mostly on the grit trays  In total we have identified 27 adult males(five more than in 2018) and 14 adult females. We have two males which are in their 6th year. 
 
I have been able to work out crudesurvival rates, and both adults and juveniles from last year had a survival rate of 60%. One of the best rates since our study started 27 years ago.

Really pleased that the high water levels of early October when all the visitor paths were under water are now back to normal. In the winter of 2000 we had really high water levels from October through to mid December followed by a cold spell. The Bearded Tit population went from ca 65 pairs to just seven in the spring of 2001. In 2000 we identified 119 adults and ringed 275 young. Next year we found only 9 adults and ringed only 18 young. They recovered quickly but have never reached the 2000 population.

I have published four papers on the results of our study. There is still plenty to write up yet, but need someone good at statistics to help out. Not my strong point! I just enjoy studying these wonderful birds!

On another subject Stuarts colour ringed study of Dippers in the  upper catchment of the River Lune has shown a strong attachment to this area. However one bird colour ringed as a nestling on April 7th this year moved 34 km north to the River  Eden catchment. Unfortunatly it was killed flying into a window.
John