From previous posts in this column, I found below history:
AJ (ringed on 20-Sep-2020 as 1st year bird)
DJ (ringed on 14-Jan-2021, carrying a 3g GPS tracker)
DL (ringed on 14-Jan-2021, carrying a 3g GPS tracker)
H8 (ringed on 25-Sep-2014 as a 1st year bird)
K3
M2
Y2 (ringed on 20-Sep-2020 as 1st year bird)
Z4 (ringed on 20-Sep-2020 as 1st year bird)
Right Leg- Blue-Green (ringed from Outer Mongolia at Chukh Bird Research Station)
how about K3 & M2?