It's been a week of mass hatching, with almost all of the first nest attempts now turned from smooth eggs, into fluffy, helpless bundles. Miraculously, the bad weather last week didn't cause too many issues, other than a few buried nests. Now the weather has improved, just in time! Right on cue though, the Kestrel is getting seen more often. They are not stupid and will be able to detect the chicks from quite a distance. All eyes will be on the lookout for any Kestrel advances in the coming few weeks.
A rather special Little Tern sporting Yellow ZBA colour-ring has been recorded tending 3 eggs. This male bird was originally ringed as a chick by Professor David Norman of the Merseyside Ringing Group in 1993 before having a colour-ring added in 2018, also by David, when it set a new world record for longevity. It is now back for its 26th year, still making it the oldest known Little Tern in the world, ever. A nice little coincidence, it was refound on father's day of all days. We are so pleased to have this bird back. It has made looking through hours of footage from nest cameras by students and volunteers from the tern group so very worthwhile!
The update from today's (29/05) clutch count was that there are now 148 nests and 393 eggs. We are nearly at the peak and it is only eight days since the first nest was found. The average clutch size is also looking healthy at 2.67, the second highest on record! With this many nests to care for if you feel like spending a few hours down at the colony please come down and help keep watch over this ever-growing population. Now's a great time to see them with constant bird activity around the beach.
We are hoping numbers rise this year thanks to productive breeding over the last few seasons and high numbers of fledglings being produced. Last year's pair total was 171, so things are looking promising for an even higher total this year. Fingers and toes crossed.
The tern group attended the RSPB Conwy Bioblitz last weekend which went down well. Thanks to everyone who came and chatted about Little Terns, we even had a few new people join the group, welcome to you all! The group will also be attending the Nant Clwyd-y-dre Nature Day at Ruthin on Saturday June 8th so if you are in the area please do pop in! There will be a multitude of conservation organisations there including Cofnod, BTO, Denbighshire Countryside Services and the Clwydian AONB team. The grounds of Nant Clwyd-y-dre are beautiful and deserving of a wander around in their own right.
A month after devastating tides down at Gronant wiped out 2/3 of all nests, it was with bated breath to see what this month would bring and kept a close eye on the daily forecasts hoping that the settled weather would continue. This time it seems, the terns have been lucky and the tides have barely reached the protective fencing. There will be a little work to clear debris in some areas but nothing significant. Phew! Just in case the tides were bad the wardens prepared nests in the usual way, by moving them slowly up the beach or by carefully placing the nest on a plant pot or bucket (as shown below).
In the last few days there has been a mass-hatching of eggs with the majority of re-laid nests successfully reaching this stage (including the two nests being beamed in to the visitor center). The photo below shows an egg with a pipping youngster inside pecking its way out. You may notice the little white speck on the end of the bill of the chick. This is known as the 'egg-tooth' and it is a temporary calcium deposit which helps the chick break through the egg. Isn't nature clever!
More of a concern is the continued predation from Kestrels. Despite the best efforts of everyone on site the Kestrels are persistent and occasionally succeed in taking chicks and fledglings. Many of the successful tern families have moved away now as there is nothing keeping them at the site and remaining here is endangering themselves and their offspring. For the remaining birds, we need help from volunteers to station themselves around the site and scare off the Kestrel when it approaches. It doesn't always work, but every successful occasion for us is one more chick to make it to fledging. Any help gratefully received!
It seemed to take forever but the first Little Tern eggs were spotted on the 20th May (first egg date 19th). This is 4 days later than last year. The terns had been back a month and showing a lot of interest in the breeding pens. We think although the birds were ready to lay their eggs earlier, in the nice weather, they were waiting for the high spring tides to pass, very sensible of them! It's all go now and since the first nest was spotted we are already up to 20 active nests and many more to come. If you have not been down to see the terns yet this season now is a good time with so much activity to be seen.