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Birding in Cadiz: A summer migration adventure at Embalse del Fresnillo

Birding trips often require patience, a keen eye, and sometimes just the right timing. My today's visit to Embalse del Fresnillo in the Sierra de Grazalema, Cadiz, provided a perfect example of this delicate balance. Although I didn't arrive as early as I had hoped, the day turned out to be a rewarding one, filled with some remarkable encounters.




Path through the forest
The beginning of the route


Booted Eagle flying with its wings spread open
A welcoming Booted Eagle



A late start in the heat


My arrival at Embalse del Fresnillo was later than planned, and the day had already begun to warm up significantly. The summer heat in the Sierra de Grazalema can be intense, and by the time I set out, temperatures were soaring. Despite the heat, the allure of the birds and the beauty of the surroundings made it worth enduring the rising temperatures.




Forest landscape with mountains in the background
Harsh but dramatic landscape




On a previous visit, I had heard the calls of several interesting species but had only seen a few of them. This time, I was determined to be more patient, and that patience was quickly rewarded.





Male Stonechat on a branch
Male Stonechat




Great Spotted Woodpeckers: a reward for patience


The undeniable highlight of the day was my encounter with two Great Spotted Woodpeckers. These striking birds, with their distinctive black, white and red plumage, are always a treat to observe. As I quietly moved through the forested areas near the reservoir, I caught sight of these woodpeckers busy at work, drumming on tree trunks in search of insects.




Woodpecker climbing a tree
One of the male Great Spotted Woodpeckers



Their rhythmic pecking echoed through the trees, creating a natural symphony that I had missed during my previous visit. This time, however, I was not only able to hear them but also to watch them for an extended period. Their energetic movements and the vibrant flash of red on both males made for an unforgettable moment, proving that patience in birding often leads to the most rewarding experiences.


Females lack the red patch on the head. In the picture below you can see two males, the one on the left is a juvenile with a red patch on the top of its head, while the bird on the right is an adult, having a red nape.



Two woodpeckers in a tree
Two males, juvenile on the left

Although I didn't catch a glimpse of it, I also heard a third woodpecker, which may have been the female.


Woodpecker hanging on a tree




Capturing the elusive songbirds


While the woodpeckers stole the show, the little songbirds that darted between the trees also captivated my attention. Embalse del Fresnillo is home to a variety of these small, often elusive birds, and on this trip, I was fortunate enough to photograph several of them. Their delicate songs filled the air, providing a melodious backdrop to the rugged beauty of the Sierra de Grazalema. Photographing these tiny birds is always a challenge, as they move quickly and blend seamlessly into their surroundings.




Sardinian Warbler sitting on a branch
Sardinian Warbler




Treecreeper climbing a tree
Imagine how difficult it is to spot this Treecreeper



But with patience and a bit of luck, I managed to capture some lovely shots. It was only the second time that I was able to photograph the Nuthatch. The bird I caught on camera was busy caching food, a behaviour that is also typical of Jays. Speaking of Jays, I heard and saw one, but the photo I took didn't have enough quality to be published here.



Nuthatch on a tree
The first moment that I spotted this Nuthatch


Nuthatch on a branch
At first it just observed the place


Bird standing on a rock
The bird soon descended to sit on a rock under a pine tree



Bird with a pine nut in its beak
After collecting a pine nut ...


Nuthatch on the bark of a tree
... the Nuthatch flew back to the previous tree ...


Bird hanging on the bark of a tree
... to hide the pinenut in the bark of the tree





The breathtaking scenery of the Sierra de Grazalema


Birding in Cadiz isn’t just about the birds; it’s also about the stunning landscapes that frame these avian encounters. The sight of the clear waters of the reservoir against the backdrop of the rugged mountains of the Sierra de Grazalema was absolutely breathtaking. The stillness of the water mirrored the surrounding peaks and sky, creating a serene, almost surreal atmosphere. This picturesque scene provided a perfect contrast to the vibrant activity of the birds, reminding me of the peaceful yet dynamic nature of this region.






Lake with mountains in the background
Some of the most beautiful scenery that can be found in the province of Cadiz


Short-toed Snake Eagle flying through the air
Short-toed Snake Eagle flying over the reservoir



Landscape with a lake and mountains




Common Redstart sitting on a branch
Common Redstart




Griffon Vultures: majestic soaring above the valleys


As the morning progressed, I began to notice a large number of Griffon Vultures circling above. These magnificent birds are a common sight in the Sierra de Grazalema, but their presence never fails to awe. Some flew low, providing an impressive view of their massive wingspans, while others descended gracefully onto a rock ledge in one of the nearby valleys.



Griffon Vulture with its wings spread flying through the air
Griffon Vulture


Watching these vultures soar so effortlessly against the mountainous backdrop was an incredible sight, highlighting the wild and untamed nature of this region. Their presence added a dramatic contrast to the smaller songbirds I had seen earlier, underscoring the diversity of birdlife that can be found in this part of Cadiz.




Griffon Vultures on a cliff
Some members of the vulture colony on an impressive cliff




Witnessing the summer migration: a spectacle of Bee-eaters


Just as the heat began to make it difficult to stay much longer, I witnessed another extraordinary sight: the summer migration of Bee-eaters. Over a hundred of these colourful birds were flying southward, returning to Africa after their breeding season in Europe.



Three Bee-eaters flying in the sky
Some of the Bee-eaters flying south towards Africa



They moved in groups of 20 to 30 birds, their vibrant green, blue, yellow, and brown plumage standing out brilliantly against the clear sky. Watching these graceful birds as they journeyed across the sky was another highlight of the day, capturing the essence of summer migration in Cadiz.





Chaffinch sitting on a branch
Chaffinch

I had secretly hoped to see a few rarer species on their migratory journey, but the season has only just started.




Small bird watching flying insects
This Common Redstart seemed overwhelmed by so many insects to choose from


Mountainous landscape

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