Sandwich terns and the miracle of migration

During a recent trip to the island of Anglesey in North Wales we were pleased to encounter a breeding colony of Sandwich terns at the Cemlyn Nature Reserve. Adult birds were rearing their chicks on little islands in a lagoon behind the beach, occasionally breaking off from parental duties to go fishing. It was such a pleasure to witness – cute little chicks exploring the islands of their birth while their parents looked on caringly or whizzed around in the skies above us, their beaks loaded down with lunch as they returned from fishing expeditions. And all around us, a cacophony of sound as the birds called out noisily to one another.

Despite the blustery wind, our morning spent at Cemlyn Bay was idyllic, just the sort of thing that brings joy to a birdwatcher’s heart. But such joys are transitory. In only a few weeks from now the birds we so admired will be at the other end of the world. We’ve all heard of migration, the process by which countless species of bird move from one geographical location to another in search of food or a suitable place to raise their young, but I think we underestimate the enormity of the undertaking.

Soon the Sandwich terns of Cemlyn Bay will be heading off to the coast of west Africa. The most intrepid amongst them will make it all the way to South Africa, a journey of around 10,000km (a little over 6,000 miles). And a few months later they’ll head back again, doing the journey in reverse!

So, in just a few short months these guys will fly around 20,000km, and in between those epic journeys they’ll spend a lot of time cruising over coastal waters on fishing expeditions. Their average lifespan of 12 years means that Sandwich terns can clock up over 250,000km (150,000 miles) in the course of their lives. What an extraordinary achievement for a creature weighing in at around 250 grams (9 ounces), and with a wingspan of roughly 100cm (39 inches).

Remember, also, that the UK plays host to four other species of tern during the summer months. One of these, the Arctic tern, breeds close to the Arctic circle, but spends northern hemisphere winters on the edge of Antarctica. Depending on the exact starting and finishing points, and the circuitous route taken in between, it is reckoned that one of these birds may fly between 71,000km and 95,000km (44,000 to 59,000 miles) over a period of 12 months. And Arctic terns are famously long-lived, with a lifespan of up to 30 years. During the course of their lifetime the oldest birds may therefore fly a distance equivalent to taking three round-trips to the moon. Eat your hearts out, NASA and SpaceX!

I find the numbers quoted above almost impossible to comprehend. Small birds, huge distances! The annual travels of Sandwich terns, Arctic terns and all their cousins leave me in no doubt that bird migration is a miracle worthy of our absolute respect. Way to go, guys.

She must have loved him! And maybe herself too, just a bit?

Driving along the North Wales Expressway (A55) it is impossible to miss the Marble Church. The spire is 202 feet (62m) high, dominating the skyline of the little town of Bodelwyddan and the surrounding countryside. It’s a striking sight and also an impressive example of marital devotion, the church having been commissioned by a widow in memory of her beloved husband.

In 1829 Margaret Williams, the daughter of a wealthy North Wales landowner, secured her perfect marriage. The man of her dreams was Henry Peyto, the sixteenth Baron Willoughby de Broke. As such she became Lady Margaret, and went off to England to live on Henry’s estate in Warwickshire for the next 23 years.

When he died in 1852, Lady Margaret evidently decided that she’d had enough of life in the English Midlands and elected to return to her ancestral Welsh estate. However, she was in no mood to forget Henry and petitioned the Bishop of Asaph to create a separate parish for the town Bodelwyddan, complete with its own parish church to serve as a memorial to her late husband.

The Bishop readily agreed, no doubt aware that the financial generosity of Lady Margaret – supported by her brother Sir Hugh Williams – would enable the construction of a landmark building. And indeed, they paid a huge sum to deliver the project. Work began in 1856, and the church was finally consecrated in 1860. The total cost was around £60,000, equivalent to about £9.5m (USD 12.7m) in today’s money.

Constructed mainly from limestone quarried in North Wales, the church is notable for containing no fewer than 14 different types of marble, including pillars of Belgian red marble, flooring of Sicilian marble, and other features fashioned from French (Languedoc) marble, Griotte marble from France and Belgium, and Kilkenny black marble from Ireland. Although it was nicknamed the “Pearl of the Vale” immediately after its construction it is no surprise that the building soon became popularly known as the Marble Church.

Other notable features of the Marble Church include a finely carved pulpit, an artistically styled font representing two girls (Sir Hugh Williams’ daughters!) holding a shell, and some fine stained glass windows. Plainly no expense was spared in the creation of Lady Margaret’s splendid memorial to her late husband.

But, when we visited the church a few weeks ago, I did find it odd that Henry is not the star of his own memorial. The font, as we have seen, features his brother-in-law’s daughters. And although there is a portrait of Lady Margaret in the entrance to the church, there is no mention at all of Henry on the foundation plaque above the porch, which reads –

This stone was laid, July the 24th, 1856, by Margaret Willoughby de Broke, who founded, erected and endowed this Church at her own expense in the devout hope that it might tend to the glory of God.

‘Mine House shall be called a House of prayer for all people.’ Isiah 56:7

And it’s worth noting that the Church is dedicated to Saint Margaret. I admit this could be pure coincidence, but really?

I have no doubt that Lady Margaret Willoughby de Broke loved her late husband dearly. But I suspect she loved herself just a bit too.