The first osprey egg of 2012 in Wales was laid at the Glaslyn Osprey Project near Porthmadog last night and was spotted by wardens this morning.
The female laid her first egg two days later than last year on 4 April, and has been sat on the nest throughout the night, getting up to feed briefly this morning.
Geraint Williams, Osprey Project Officer said: "The ospreys have been busy getting their nest ready and bringing moss and twigs to build it up. The nest diameter is currently two metres in size."
The team are hoping more eggs will follow over the next few days. Each egg will then be incubated for around 37 days, which means the first egg should hatch around the beginning of May.