A change in tone for this month's blog as we write about subjects and use terminology familiar to bird-ringers.
An increase in 3J P birds marks the turning point of the season when young birds move off their natal sites and begin their post-juvenile moults.
The BTO has asked bird ringers to record more main wing moult scores: “record and submit a moult code for every bird and primary moult scores (e.g. 5555420000) for birds moulting their primaries, it will help improve the quality of the data if you don’t already.
This can produce information on the timing of breeding and a multitude of different analyses like the phenology figures on the online report pages.”
The heat continued to dry the site out and this, on face value, must be having an impact. CES 9 was particularly miserable with only a dozen birds in 360’ of netting. Highlights included ECP’s first Magpie on 16th.
If we look at CES July as a whole then we see its missing numbers of Blackcap and Whitethroat, though Chiffchaffs have actually outpaced 2021 catches. We’re not seeing large tit flocks at Wraysbury either.
Retraps of note
photo opposite) to ring at night - up to fifty caught in an evening - and lots of Manx
photo opposite). About half were still completing post-juvenile moult, so probably only about 6 weeks old.
News from The Parks
Demon Q/A: Recording 3J birds during post-juvenile moult
Demon Q/A: do you know reportworthy_flag?
- C First for country
- F First for county
- G Longevity record (local level)
- L Longevity record (national level)
- M Significant movement of species
- O Other
- Q Questionable recovery record*