Pinnated Bittern

Pinnated Bittern

Botaurus pinnatus

Silhouette: Sheatherius · PhyloPic

Least ConcernNear ThreatenedVulnerableEndangeredCritically Endangered
Daily sighting probability Insufficient data
at Sian Ka'an Biosphere Reserve
4 Verified sightings at Sian Ka'an Biosphere Reserve From 2019 to 2026
305 Verified sightings across all 17 parks From 2019 to 2026
☀️ Diurnal When it's spotted during daytime hours (6am–6pm)

About the Pinnated Bittern

The pinnated bittern (Botaurus pinnatus), also known as the South American bittern, is a large member of the heron family (Ardeidae) found in the New World tropics. Like the other Botaurus bitterns, its plumage is mostly buffy-brown and cryptically patterned. Though it is a widespread species, it is rarely seen – presumably due to its skulking habits – and much about its life history remains little known.

The pinnated bittern is a large heron, measuring between 25–30 in (64–76 cm) with a weight that ranges from 554 to 1,157 g (1.2 to 2.6 lb); males typically weigh considerably more than females. Sexes are similarly plumaged, but females tend to be smaller than males and have brown instead of black on the tail.

Both adults and immature birds are generally buffy, though heavily marked with cryptic patterning. Juveniles tend to have a somewhat more reddish ground color. The throat is unmarked white, the foreneck is white broadly streaked with pale brown, and the rest of the neck is buff with thin black barring. The breast and belly are white with broad pale brown streaks, while the back is buff, heavily streaked and barred with black. Rectrices are black in males and... Wikipedia →

Global Distribution

Warmer areas are where this animal is recorded most often.

Parks Where Found

# Park Country Daily sighting probability
1 Lago de Yojoa 🇭🇳 Honduras
~10%
2 Cerro Azul Meámbar National Park 🇭🇳 Honduras
~10%
3 Palo Verde National Park 🇨🇷 Costa Rica
<5%
4 Caroni Swamp 🇹🇹 Trinidad and Tobago
<5%
5 Bastimentos Island National Marine Park 🇵🇦 Panama
<5%
6 La Amistad International Park (Panama) 🇵🇦 Panama
<5%
7 Sierra de la Macarena National Park 🇨🇴 Colombia
<5%
8 Tortuguero National Park 🇨🇷 Costa Rica
<5%
9 Chapada Diamantina National Park 🇧🇷 Brazil
Insufficient data
10 Gandoca-Manzanillo Wildlife Refuge 🇨🇷 Costa Rica
Insufficient data
11 Calakmul Biosphere Reserve 🇲🇽 Mexico
Insufficient data
12 Monteverde Cloud Forest Reserve 🇨🇷 Costa Rica
Insufficient data
13 Iberá National Park 🇦🇷 Argentina
Insufficient data
14 Sian Ka'an Biosphere Reserve 🇲🇽 Mexico
Insufficient data
15 Cabo Blanco Absolute Nature Reserve 🇨🇷 Costa Rica
Insufficient data
16 Parque Estadual Encontro das Águas 🇧🇷 Brazil
Insufficient data
17 Tenorio Volcano National Park 🇨🇷 Costa Rica
Insufficient data
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