Sierpe is one of those out of the ways places that few birders visit when doing Costa Rica. It’s off the beaten track, isn’t exactly surrounded by large areas of protected forest, and is easily bypassed for such better known southwestern Costa Rican sites as the Osa Peninsula, Esquinas Rainforest Lodge, and Wilson Botanical Gardens near San Vito. However, if you have time to see Common Potoo, maybe get a roosting owl or two, watch Scarlet Macaws forage right in town, and see a few pelagics including more or less guaranteed Red-footed Booby, then make some time for Sierpe!
I just did four days of birding and guiding around Sierpe and we had all of the above and quite a bit more. Although the village itself isn’t exactly a bastion of high quality habitat, you can see a fair number of quality species in and near town, and it’s an excellent base for taking boat trips through a huge maze of mangroves, to Cano Island for a few pelagics, and to Corcovado National Park. On our recent trip, we did two of the boat tours mentioned above with pretty fine results.
On the afternoon of our arrival to Sierpe, we started with a three hour boat tour through some mangroves and along a channel that passed through oil palm plantations flanked by bamboo. While the oil palms aren’t exactly appealing for birds, we headed up that way because our guide wanted to show us roosting Common Potoo, an owl or two, and American Pygmy Kingfisher. Although the barn Owl under the bridge was a no show, the Crested Owl was on its roost, and we got the other two including our first potoo of the trip. The guides also mentioned that they sometimes see Agami Heron in that area. No luck for us with the sneakiest of Costa Rican herons but it was certainly a worthwhile trip. We also had several parakeets and parrots flying around, Fiery-billed Aracari, Black-mandibled Toucan, White-vented Euphonia, and several other bird species.
That night, a bit of nocturnal birding failed to turn up more owls but we did have Southern Lapwings on the football pitch (aka soccer field), and we found an either Rufous Nightjar or a Chuck wills Widow. The hefty nightjar was perched on a fence post near the tech school and let us watch it for a bit but failed to call. Nor could we see its rictal bristles or undertail pattern to get a solid identification but there was always another night to get a better view.
Our second day in town was our biggest and most memorable. From 8:30 in the morning to around 5 in the evening, we boated through a huge area of mangroves before making our way to Cano Island. This was followed by the boat swinging by islets with a bunch of birds, lunch at a secluded tropical beach at Isla Violenes and another ride back through the mangroves. On the way out, we didn’t see too many birds and surprisingly to me, dipped on Yellow-billed Cotinga (as that area is the stronghold for this endangered species), but managed a small group of Semipalmated Plovers among common heron species and a few others.
After hearing some pretty frightening stories about weaving through the waves at the river mouth, we were rightly concerned. Luckily, the trip out past the mouth wasn’t too bad but we had a choppy ride the rest of the way to the island (maybe 45 minutes?). I successfully countered the effects of those waves on my land lubber physiology with a rock solid stare at the horizon and a constant supply of crackers accompanied by sips of water. Sadly, we only saw two birds on the way to the island- a Brown Booby and a Magnificent Frigatebird along with very close looks at Spotted Dolphins. As usual, the wave action and lack of birds made me question why I was once again on an ocean going boat but those uneasy concerns were assuaged a bit once we reached the island and its beautiful tourmaline waters.
The island looked lush and my original hope was to hang out on the beach and scope the ocean but that plan was derailed by a recent decision to forbid any landings by tourists until a proper sanitation system is put into place. Although that was annoying, they are right to do so because we of course don’t want to ruin the island. The unfortunate part of this situation is that if it’s anything like most situations in Costa Rica, the solution will require so much needless bureaucracy that it may take years to put in even a port a potty.
Well, as it turned out, we saw almost no birds near the island in any case so it was better to leave it, and especially because the ride back was a complete contrast to the trip to the island. Instead of cloudy weather and choppy water, the sun was shining and we rode the swells like swimming on cloud nine. Oh, and we saw some birds too! Pelagic ones! Even a glimpse of a storm petrel from a bouncing boat is worth ten birds on land because you just can’t see them from land! A fine Wedge-rumped Storm Petrel was our first true seabird of the trip and as it bounded away, we got close looks at a duo of Red-necked Phalaropes! Shortly after that, we were treated to a few nighthawkish Black Storm Petrels and then we got our best pelagic of the trip- an immature Red-billed Tropicbird! The tropicbird was right in our path and as it raised up off of the water, it shook its entire body a couple of times before flying off and out of sight. Since all of these birds were seen in a time frame of around 35 minutes and were only seen because they were in the path of our boat, I bet you could see a bunch of nice birds by doing a proper pelagic in that area.
Once we got near shore, the Islitas Violines beckoned. Also known as the “booby rocks”, we indeed saw several Sulids along with some other niceties. Brown Boobies and Red-footed Boobies were equal in abundance and both were nesting! The Red-footed was a much awaited lifer for myself and was also new for several people on the trip. While taking in the form of dark morph Red-footed Boobies, we also picked up two Wandering Tattlers along with Brown Pelicans and frigatebirds. Good stuff!
After that nice bunch of birds, we boated in to the beach at Isla Violines for a good picnic lunch. We also looked a bit for birds there but as it was the quiet time of the day, didn’t see much. It did look like a good area to see cotingas and lots of other birds though because the island is covered in forest. Before you go wandering around, though, keep in mind that the island also has a sort of abundant population of Fer-de Lance! That kept us from walking around much.
The ride back in to the river was easy going and the birding on the way back turned up Scaled Pigeon, flyby parrots, lots of Pale-vented Pigeons going to roost, a Peregrine, and another Common Potoo among some other bird species.
On the next day, half the group drove an hour or so to the la Gamba road in search of seedeaters aand other species of weedy fields and forest edge. Although we didn’t visit Esquinas Lodge, that birding hotspot is also a possibility. They charge some sort of entrance fee to use trails that access great forest that has Black-cheeked Ant Tanager and the general area around the lodge is also very good for many rainforest species. We also birded rice fields near Ciudad Neily a bit but there wasn’t too much around. It probably would have been better later in the afternoon.
That night, we tried for the nightjar again after looking for owls. No show on the owls but lots of pauraques, we heard a Barn Owl, had Southern Lapwings, and at 8:30, the nightjar made its appearance on the same fence post. Fortunately, I got a good look at the undertail as it flew. Buff on almost the entire length of the undertail feathers showed its identity to be a Chuck wills Widow and not a hoped for Rufous Nightjar but a Chuck is still a great bird to get in Costa Rica!
Our final morning was nothing more than a walk just outside of town but it still turned up several species, the best of which were Striped Cuckoo, Yellow-crowned Tyrannulet, and Mourning Warbler among Red-crowned Woodpecker, Red-lored Parrots, Orange-chinned Parakeets, and lots of common flycatchers, seedeaters, etc.
Upon doing the bird list, we found that we had identified around 150 species and that was without doing any serious rainforest birding! Add a morning trip to Esquinas and one might even get 200 species during 4 or 5 days in the area. Along with the birds, I also have to mention that the best part of the trip was staying at the Hotel Oleaje Sereno.
Forget about those old bad reviews on Trip Advisor because they pertain to another owner and different management. The new owner and management is nothing short of exemplary. Having visited many hotels in Costa Rica, they gave us some of the best service I have experienced anywhere. They were prompt, friendly, always available, and always went out of their way to help us. They also set up our tours and did an excellent job. Incredibly, the prices we paid for our stay at the Oleaje Sereno Hotel (basic but air conditioned and clean rooms), and Perla del Sur Tours were very low and might be the best value I have ever paid for accommodation and tours in Costa Rica. If you go to Sierpe and are on a budget, this place and their tours are a fantastic bargain. They also had nice birding from their dock (scope the trees on the other side of the river) and Scarlet Macaws foraging in short Beach Almonds next to the hotel.
On my next visit to the area, I would stay at the same hotel and do the same boat trips but I would do more owling on the road between Sierpe and the highway, and do a day trip to Esquinas. With enough time, I would also check sites closer to the border to see if I could add Yellowish Pipit to the Costa Rican list!