The calendar says “August’ but in Costa Rica, the weather mimics so many other times of the year. I look out the window and see the thick blanket of clouds hugging the tops of the mountains. It might rain, it might not, but it’s warm outside and that’s always a given. Unlike the northern temperate zone, this month isn’t the last 30 days of summer. There won’t be any crisp autumn nights ahead either. Much to my daughter’s chagrin, she won’t witness the change of seasons. She might feel differently if she knew that winter is not a Disneyesque frozen wonderland. While the natural magic of soft falling snow and faint crystal frequencies of forming ice could remind one of “Elsa”, the enchantment lasts only as long as your personal comfort. Wade through snow drifts, feel the pain of freezing toes, and come face to face with screaming wind chill, and the wish to grow wings and fly south become tangible. After all, a lot of birds do it once a year, so why not us?
A lot of those migrants fly to and through Costa Rica and some have already arrived. Although several shorebirds appear to have stayed here instead of going north, more have definitely flown down from their northern breeding grounds. A few local birders have made trips to Chomes and seen fair numbers of Black-bellied Plovers, Short-billed Dowitchers, and even a Long-billed Curlew. Several have also had encounters with Clapper (Mangrove) Rail, a resident, furtive species that appears to be regular in short Black Mangroves at Chomes and nearby sites in the Gulf of Nicoya.
Other shorebirds are surely around and arriving as well, so, hopefully, more birders can get out there and see what’s happening (I hope I can!).
As far as Passerines go, it’s still too early for the majority of warblers but a few have made appearances, including this year’s first report of Cerulean Warbler. Go to the right places in late August and early September and you have a very good chance of seeing Cerulean Warbler in Costa Rica. Those places are usually foothill and middle elevation forests on the Caribbean Slope, especially at the Reserva las Brisas. The first Cliff Swallows have also appeared, and many other species will be here in a month.
Birds are also leaving Costa Rica. Go birding here during March and the songs of Piratic Flycatchers are a constant theme. Go birding now and you would be lucky to see one. They have stopped singing and some are probably still around, but most have departed for Amazonia. Two other “summer” breeders will also be gone soon as well. Both the Sulphur-bellied Flycatcher and the Yellow-green Vireo are pretty common species on the Pacific slope from February to about now. I heard both just the other day so know that they are still around but most will be leaving any one of these nights.
Two of the most spectacular species about to leave town are the Swallow-tailed and Plumbeous Kites. Migrating groups have been reported and they are headed to the Amazon basin. the birding is great in Costa Rica, but I wish I could fly with them, at least for a little bit. It would be interesting to see if they go to one area for the winter or if they roam over the vast rainforests. It would also be nice to take in a few Amazonian dawn choruses, but only for a little while because I wouldn’t want to miss the rest of fall migration in Costa Rica.