Bird ringing is a fascinating way to observe, study, and conserve bird populations, and today we had the opportunity to attend an event dedicated to this very purpose, organised by the SGHN (Sociedad Gaditana de Historia Natural). Held near the river Arillo in San Fernando, next to Sendero Tres Amigos, this bird ringing event was an extraordinary experience for everyone involved. The event, which began around 6 PM and lasted for more than 9 hours, brought together a diverse group of over 20 people, including both professional bird ringers and learners eager to hone their skills. Participants came from various parts of Spain, all united by their shared passion for avian conservation.
Setting up the nets in the marshes
As the evening light began to wane, the group embarked on the first task of the event—setting up misting nets in the marshes. These nets, crucial for safely capturing birds, were installed while there was still enough daylight. The marshes, though beautiful, required everyone to wade through the mud to reach the ideal spots for the nets. Once in place, the nets were left closed as the group prepared for the night ahead.
Around 9 PM, when the sun had just set and the sky was fading into twilight, the nets were finally opened. This timing was critical, as several wader birds become more active at dusk, increasing the likelihood of a successful catch.
The first birds
By 9:30 PM, the first birds had flown into the nets, marking the beginning of what would be a long and fruitful night of bird ringing. The group made several rounds to check the nets and the ground traps, and each time, they found a variety of birds entangled in the fine mesh. It was a thrilling sight for everyone, especially those new to the experience.
Among the birds caught were several species of waders, including Sanderling, Curlew Sandpiper, Dunlin, Common Redshank and Red Knot. These species are known for their long migrations, making them perfect candidates for ringing, as the data collected can provide valuable insights into their migratory patterns and overall health.
Ringing and data collection
In total, 69 birds were ringed throughout the night, an impressive number that made the event a significant success. The process of ringing each bird was done with great care and precision. Each bird was gently removed from the net and then taken to the ringing station. Here, the birds were carefully measured and weighed. Their age, sex, and any other notable features were recorded. A lightweight ring was placed around the leg, or a combination of colours to make distant identification possible in the future.
Interestingly, among the birds caught, two already had rings. These birds had been ringed in England and Norway, highlighting the vast distances these tiny creatures can travel. The data from these rings will contribute to international bird tracking efforts, helping to build a global picture of bird movements and behaviour.
A night dedicated to conservation
The entire process, from capturing to ringing, was carried out as quickly as possible to minimise stress on the birds. The team’s dedication to bird welfare was evident in their careful handling and efficient work. As the night progressed, the group continued their rounds, collecting more birds from the nets and repeating the process until the early hours of the morning.
This bird ringing event at San Fernando was more than just a scientific exercise; it was a powerful reminder of the beauty and fragility of bird life and the importance of efforts to protect it.
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