A new RSPB Project Officer was appointed at the start of 2009, Geraint Williams. The male returned earlier than he had done in previous years on 21st March and incredibly the female was just one day behind him. The eggs were laid on 6th, 9th and 12th April and they hatched on 13th, 14th and 17th May. On 18th June they were ringed, white Darvics again, White 90 a female, White YF a male and the youngest another female White 91. A few days after ringing it was noticed that she was no longer wearing her BTO ring. They fledged on 6th, 8th and 11th July. The last sighting of YF and the male was on 2nd September.
On 18th July 2012 White 91 landed on the Osprey nest at Loch of the Lowes. This was the first time she had been sighted since she was last seen at her natal nest on 1st September 2009.
The male’s arrival was one day later than the previous year, arriving on 22nd March and the female was back with him the following morning. However, an intruder female disrupted the osprey pair, and it was 16 days before the first egg was laid, the longest period ever for the Glaslyn birds. The eggs were laid 8th, 11th and 14th April, with hatching dates of 15th, 17th and 19th May. Ringing took place on 16th June. White Darvics were used for the final time. White 93 and White 92 females and the youngest a male White 94. The youngsters fledged on 8th, 9th and 11th July. All the ospreys had left the valley by the end of August.
In September came the news that White 94 had been sighted and photographed by M Trachsel at Lake Klingnau, near Zurich.
The male put in his earliest appearance to date arriving on 16th March. He was not alone for too long though, as the female was back on the 20th, her earliest return date. The early arrival of the pair lead to the earliest ever recorded osprey egg in the UK being laid on 2nd April, followed by another two on the 5th and 8th. On the 21st April whilst the male was away fishing, the female was joined by another male who presented her with a fish. There was great excitement in the visitor centre when it was noticed that he was wearing a white Darvic ring on his right leg. Zooming in the camera revealed that it was YC one of the 2008 youngsters. The first Glaslyn born Osprey to have returned to Wales.
The eggs hatched on 9th, 11th and 14th May and the first chick was subsequently confirmed as being the earliest recorded Osprey chick ever to hatch in the UK. Ringing took place on 16th June. Blue Darvics were used for the first time. Although they were believed to have been ringed in order of age there was some uncertainty. Blue 77 a female had a slightly longer wing length than Blue 78 a male and was recorded as the eldest. Blue 79 the youngest and another male had a much shorter wing length, but was actually slightly heavier than Blue 78! The first to fledge on 28th June was Blue 78 and if he was the middle chick that made for a fledging age of 48 days. Blue 77 fledged on 4th July and Blue 79 on 6th July. Blue 78 appeared to become independent fairly quickly and after the first part of August there were no confirmed sightings of him, but the other two juveniles remained in the area until late August.
There was another important event in 2011, as the Glaslyn Ospreys were no longer the only known breeding pair in Wales. The unringed male Osprey known as Monty that had been using the nest platform at Cors Dyfi since at least 2009, had been joined by a female hatched at Rutland in 2008, White 03. They successfully raised three chicks together. White YC also visited the Dyfi nest on at least two occasions.