Data Zone
The site was identified as internationally important for bird conservation in 2007 because it was regularly supporting significant populations of the species listed below, meeting ('triggering') IBA criteria.
Populations meeting IBA criteria ('trigger species') at the site:| Species | Red List | Season (year/s of estimate) | Size | IBA criteria |
|---|---|---|---|---|
| Great Curassow Crax rubra | VU | breeding (2006) | 250-999 birds | A1 |
| Costa Rican Swift Chaetura fumosa | LC | breeding (2006) | unknown | A2, A3 |
| White-crested Coquette Lophornis adorabilis | LC | breeding (2006) | unknown | A2, A3 |
| Garden Emerald Chlorostilbon assimilis | LC | resident (2006) | unknown | A3 |
| Mangrove Hummingbird Amazilia boucardi | EN | breeding (2006) | 1,000–1,500 birds | A1, A2, A3 |
| Charming Hummingbird Polyerata decora | LC | breeding (2006) | unknown | A2, A3 |
| Ruddy Turnstone Arenaria interpres | NT | winter (2006) | 2,000–3,000 birds | A4i |
| Least Sandpiper Calidris minutilla | NT | non-breeding (2006) | 5,000–10,000 birds | A4i |
| Short-billed Dowitcher Limnodromus griseus | VU | resident (2006) | 1,500–2,500 birds | A4i |
| Spotted Sandpiper Actitis macularius | LC | winter (2006) | 1,500–3,000 birds | A4i |
| Royal Tern Thalasseus maximus | LC | resident (2006) | 500–1,000 birds | A4i |
| Baird's Trogon Trogon bairdii | NT | breeding (2006) | 250-999 birds | A1, A2, A3 |
| Fiery-billed Araçari Pteroglossus frantzii | LC | breeding (2006) | unknown | A2, A3 |
| Rufous-winged Woodpecker Piculus simplex | LC | resident (2006) | unknown | A3 |
| Golden-naped Woodpecker Melanerpes chrysauchen | LC | breeding (2006) | unknown | A2 |
| Black-hooded Antshrike Thamnophilus bridgesi | LC | breeding (2006) | unknown | A2, A3 |
| Tawny-winged Woodcreeper Dendrocincla anabatina | LC | breeding (2006) | unknown | A3 |
| Orange-collared Manakin Manacus aurantiacus | LC | breeding (2006) | unknown | A2, A3 |
| Three-wattled Bellbird Procnias tricarunculatus | VU | resident (2006) | 100–200 birds | A1 |
| Turquoise Cotinga Cotinga ridgwayi | VU | breeding (2006) | 250–500 birds | A1, A2, A3 |
| Yellow-billed Cotinga Carpodectes antoniae | NT | breeding (2006) | 100–250 birds | A1, A2, A3 |
| Yellow-bellied Tyrannulet Ornithion semiflavum | LC | breeding (2006) | unknown | A3 |
| Riverside Wren Cantorchilus semibadius | LC | breeding (2006) | unknown | A2, A3 |
| Yellow-crowned Euphonia Euphonia luteicapilla | LC | breeding (2006) | unknown | A3 |
| Spot-crowned Euphonia Euphonia imitans | LC | breeding (2006) | unknown | A2, A3 |
| Black-cheeked Ant-tanager Habia atrimaxillaris | NT | resident (2004) | 1,000-2,499 birds | A1, A2, A3 |
| White-throated Shrike-tanager Lanio leucothorax | NT | breeding (2006) | unknown | A3 |
| Ramphocelus costaricensis | NR | breeding (2006) | unknown | A2, A3 |
| Year | Protected Area | Designation (management category) | % coverage of IBA |
|---|---|---|---|
| 1975 | Corcovado | Parque Nacional (II) | 20 |
| 1976 | Isla del Caño | Reserva Biológica (Ia) | 2 |
| 1978 | Golfo Dulce | Reserva Forestal (VI) | 27 |
| 1985 | Golfito (mixto) | Refugio de Vida Silvestre (IV) | 1 |
| 1991 | Piedras Blancas | Parque Nacional (II) | 7 |
| 1995 | RHR Bancas (privado) | Refugio de Vida Silvestre (IV) | <1 |
| 1995 | Forestal Golfito S.A. (privado) | Refugio de Vida Silvestre (IV) | <1 |
| 1995 | Hacienda Copano (privado) | Refugio de Vida Silvestre (IV) | <1 |
| 1997 | Punta Río Claro (mixto) | Refugio de Vida Silvestre (IV) | <1 |
| 1998 | Donald Peter Hayes (privado) | Refugio de Vida Silvestre (IV) | <1 |
| 2013 | Lapa Rios Reserve | Conservation Easement (Ib) | <1 |
| Habitat | % of IBA | Habitat detail |
|---|---|---|
| Forest | 7 | Mangrove |
Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Sierpe Wetlands and Osa Peninsula (Costa Rica). Downloaded from
https://datazone.birdlife.org/site/factsheet/sierpe-wetlands-and-osa-peninsula-iba-costa-rica on 23/12/2024.