When a Peregrine chick was bred for the first time on St Albans Cathedral in May 2022, as a licensed bird-ringer/nest recorder and holder of a government license to visit the nests of this specially protected species, I ringed the young female bird which was seen to successfully fledge the nest in late June of 2022. We were then delighted to see the Peregrines return to breed again in 2023 and 2024 and they raised three young in each year over that period.

This year has been difficult with the well-publicised incident where the first clutch of three eggs were destroyed on 7 April 2025. However, the resilience of the Peregrine pair shone through and they laid a second clutch in early May. These hatched during the second week of June.

On Monday, 30 June, with a brood of three well-developing chicks in the nest tray, I went with colleagues to the nest and carried out the ringing of them, just three weeks after they had hatched. We know from the webcam live-stream that the parents have fed and looked after them well, so when we checked them we saw that they were all in good condition. We fitted a ring on each of their legs. One is a British Trust for Ornithology metal ring, a bit like a license tag, the other is a larger ring which is coloured Orange with Black lettering which means we’ll be able to track them in years to come. 

Quite reasonably many people ask why do we need to ring birds? Well, if we don’t put rings on these birds we don’t know much about their origins or their future. We see birds sitting around, they turn up at nests or whatever and we have no idea where they came from, how old they are, who they are. However, those with the colour-rings which can be read from a distance let us know exactly who each bird is. That means we have a much better idea of how long they live, their movements around the UK and even abroad, along with their relationships as sometimes they might not get on and split up or have mishaps, so the ringing gives us a way of tracking the family trees of Peregrines going forward. For information on re-sightings of two of the previously ringed St Albans Peregrines, see my updates below

In addition to fitting the rings we also took measurements which from these, particularly their weights, we can ascertain the sex of each bird as female Peregrines are much larger than males. On Monday we concluded that we have … females, known technically as a ‘Falcon’ and … males, known as a ‘Tiercel’. 

Although one can never be sure whether all of the young falcons will make it to the flying stage we are very hopeful that this latest Cathedral three will fledge from their nest ledge towards the end of July and will be seen around the area for some months to come before finding their own way further afield. 

Barry Trevis, Herts Breeding Peregrine Co-ordinator 

Barry’s Updates

Two St Albans-reared Peregrines re-sighted!

The first-ever Peregrine that was bred at St Albans Cathedral was ringed on 9 June 2022 which included an Orange colour-ring showing digits on the ring TZV. Shortly after ringing, the female bird was given the name ‘Artemis’ by public vote. She flew from the nest in early July 2022 and was seen with her parents around the cathedral a few times during that summer.

I received a  ‘Recovery Report’ from the British Trust for Ornithology, that she has been re-sighted flying near the church in the coastal village at Winterton-on-Sea, Norfolk, with another Peregrine on 14 April 2024. This was 675 days since she was ringed and is 106 miles away from St Albans.

One of last year’s young, the tiercel, that was featured being ringed on BBC’s ‘The One Show’ last autumn, was ringed on 27 May 2024, fledging the nest ledge in early July. On 22 December 2024 he was photographed by keen photographer, Thomas Miller, hunting over Port Meadow, a Thames-side meadow just north of Oxford. He was then seen regularly through the winter and spring until last recorded there on 8 April 2025.