Long-billed Gnatwren

Q: What are the chances of seeing a Long-billed Gnatwren in Sian Ka'an Biosphere Reserve?

About 10% of wildlife watchers report a Long-billed Gnatwren sighting in Sian Ka'an Biosphere Reserve, based on 240 verified sightings from GBIF citizen-science data.

Q: When is the best time to see Long-billed Gnatwren in Sian Ka'an Biosphere Reserve?

January has the highest sighting rate for Long-billed Gnatwren in Sian Ka'an Biosphere Reserve in our monthly data.

Ramphocaenus melanurus

Silhouette: Sheatherius · PhyloPic

Least ConcernNear ThreatenedVulnerableEndangeredCritically Endangered

KingdomAnimalia (Animals)
PhylumChordata (Chordates)
ClassAves (Birds)
OrderPasseriformes (Perching Birds)
FamilyPolioptilidae (Gnatcatchers and Gnatwrens)
GenusRamphocaenus (Long-billed Gnatwrens)
SpeciesRamphocaenus melanurus (Long-billed Gnatwren)

Daily sighting probability ~10% · With luck

at Sian Ka'an Biosphere Reserve

240 Verified sightings at Sian Ka'an Biosphere Reserve From 2019 to 2026

13,969 Verified sightings across all 60 parks From 2019 to 2026

January Best month highest sighting rate

☀️ Diurnal When it's spotted during daytime hours (6am–6pm)

About the Long-billed Gnatwren

The trilling gnatwren (Ramphocaenus melanurus), formerly long-billed gnatwren, is a very small bird in the gnatcatcher family. It found from southeast Mexico south to Ecuador and Amazonia. The trilling gnatwren was described by the French ornithologist Louis Pierre Vieillot in 1819 from a specimen collected in Brazil. He coined the binomial name Ramphocaenus melanurus. The genus name Ramphocaenus means "unusual beak", from the Ancient Greek rhamphos (ῥάµϕος, "beak") and cænos (καινός, "strange"). The specific epithet combines the Ancient Greek melas "black" and oura "tail". A molecular phylogenetic study published in 2018 found that two subspecies of Ramphocaenus melanurus formed a separate clade. The subspecies were split off to become the chattering gnatwren and the English name of this species was changed from "long-billed gnatwren" to "trilling gnatwren".

Thirteen subspecies are recognised: R. m. rufiventris (Bonaparte, 1838) – south Mexico to west Ecuador R. m. ardeleo Van Tyne & Trautman, 1941 – Yucatán Peninsula (southeast Mexico) and north Guatemala R. m. panamensis Phillips, AR, 1991 – central and east Panama

R. m. sanctaemarthae Sclater, PL, 1862 – north... Wikipedia →

Closest Relatives at Sian Ka'an Biosphere Reserve

Polioptila plumbea

Daily sighting probability <5% · Rare

Polioptila caerulea

Daily sighting probability <5% · Rare

Quiscalus mexicanus

Daily sighting probability ~80% · Very likely

Mimus gilvus

Daily sighting probability ~70% · Very likely

Myiozetetes similis

Daily sighting probability ~70% · Very likely

Dives dives

Daily sighting probability ~60% · Likely

Cyanocorax yucatanicus

Daily sighting probability ~60% · Likely

Psilorhinus morio

Daily sighting probability ~50% · Likely

Icterus cucullatus

Daily sighting probability ~50% · Likely

Pitangus sulphuratus

Daily sighting probability ~50% · Likely

Turdus grayi

Daily sighting probability ~50% · Likely

Euphonia hirundinacea

Daily sighting probability ~50% · Likely

See all 12 relatives Show fewer

Global Distribution

Warmer areas are where this animal is recorded most often.

Parks Where Found

#	Park	Country	Daily sighting probability
1	Cockscomb Basin Wildlife Sanctuary	🇧🇿 Belize	~40%
2	Carara National Park	🇨🇷 Costa Rica	~30%
3	El Triunfo	🇲🇽 Mexico	~30%
4	Tikal National Park	🇬🇹 Guatemala	~20%
5	Cahuita National Park	🇨🇷 Costa Rica	~20%
6	Pico Bonito National Park	🇭🇳 Honduras	~20%
7	Parque Natural Metropolitano	🇵🇦 Panama	~20%
8	Santa Rosa National Park	🇨🇷 Costa Rica	~20%
9	Montes Azules Biosphere Reserve	🇲🇽 Mexico	~20%
10	Chagres National Park	🇵🇦 Panama	~20%
11	Biotopo Cerro Cahuí	🇬🇹 Guatemala	~20%
12	Rincón de la Vieja National Park	🇨🇷 Costa Rica	~20%
13	Soberanía National Park	🇵🇦 Panama	~20%
14	Arenal Volcano National Park	🇨🇷 Costa Rica	~20%
15	Bastimentos Island National Marine Park	🇵🇦 Panama	~20%
16	San Lorenzo Protected Forest	🇵🇦 Panama	~10%
17	Henri Pittier National Park	🇻🇪 Venezuela	~10%
18	Calakmul Biosphere Reserve	🇲🇽 Mexico	~10%
19	Corcovado National Park	🇨🇷 Costa Rica	~10%
20	Tayrona National Natural Park	🇨🇴 Colombia	~10%
21	Sian Ka'an Biosphere Reserve	🇲🇽 Mexico	~10%
22	Sierra de la Macarena National Park	🇨🇴 Colombia	~10%
23	Canaima National Park	🇻🇪 Venezuela	~10%
24	Ostional Wildlife Refuge	🇨🇷 Costa Rica	~10%
25	Brownsberg Nature Park	🇸🇷 Suriname	~10%
26	Marino Ballena National Park	🇨🇷 Costa Rica	~10%
27	La Amistad International Park (Panama)	🇵🇦 Panama	~10%
28	Cabo Blanco Absolute Nature Reserve	🇨🇷 Costa Rica	~10%
29	Braulio Carrillo National Park	🇨🇷 Costa Rica	~10%
30	Manuel Antonio National Park	🇨🇷 Costa Rica	~10%
31	Cuyabeno Wildlife Reserve	🇪🇨 Ecuador	~10%
32	Gandoca-Manzanillo Wildlife Refuge	🇨🇷 Costa Rica	~10%
33	Amacayacu National Natural Park	🇨🇴 Colombia	~10%
34	Piedras Blancas National Park	🇨🇷 Costa Rica	~10%
35	Cerro Azul Meámbar National Park	🇭🇳 Honduras	~10%
36	Machalilla National Park	🇪🇨 Ecuador	~10%
37	Yasuní National Park	🇪🇨 Ecuador	<5%
38	Tenorio Volcano National Park	🇨🇷 Costa Rica	<5%
39	Farallones de Cali National Natural Park	🇨🇴 Colombia	<5%
40	Darién National Park	🇵🇦 Panama	<5%
41	Cusuco National Park	🇭🇳 Honduras	<5%
42	Tapantí-Macizo de la Muerte National Park	🇨🇷 Costa Rica	<5%
43	Tortuguero National Park	🇨🇷 Costa Rica	<5%
44	Chirripó National Park	🇨🇷 Costa Rica	<5%
45	Itatiaia National Park	🇧🇷 Brazil	<5%
46	Tambopata National Reserve	🇵🇪 Peru	<5%
47	Lago de Yojoa	🇭🇳 Honduras	<5%
48	Las Baulas Marine National Park	🇨🇷 Costa Rica	<5%
49	Anavilhanas National Park	🇧🇷 Brazil	<5%
50	Chapada Diamantina National Park	🇧🇷 Brazil	<5%
51	Chingaza National Natural Park	🇨🇴 Colombia	<5%
52	Monteverde Cloud Forest Reserve	🇨🇷 Costa Rica	<5%
53	Cañón del Sumidero National Park	🇲🇽 Mexico	<5%
54	Cordillera Azul National Park	🇵🇪 Peru	<5%
55	Palo Verde National Park	🇨🇷 Costa Rica	<5%
56	Celestún Biosphere Reserve	🇲🇽 Mexico	<5%
57	Los Nevados National Natural Park	🇨🇴 Colombia	<5%
58	Poás Volcano National Park	🇨🇷 Costa Rica	Insufficient data
59	Caroni Swamp	🇹🇹 Trinidad and Tobago	Insufficient data
60	Volcán Barú National Park	🇵🇦 Panama	Insufficient data

Quick answers

What are the chances of seeing a Long-billed Gnatwren in Sian Ka'an Biosphere Reserve?

About 10% of wildlife watchers report a Long-billed Gnatwren sighting in Sian Ka'an Biosphere Reserve, based on 240 verified sightings from GBIF citizen-science data.

When is the best time to see Long-billed Gnatwren in Sian Ka'an Biosphere Reserve?

January has the highest sighting rate for Long-billed Gnatwren in Sian Ka'an Biosphere Reserve in our monthly data.

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Long-billed Gnatwren

About the Long-billed Gnatwren

Recent sightings of Long-billed Gnatwren in Sian Ka'an Biosphere Reserve

Closest Relatives at Sian Ka'an Biosphere Reserve

Tropical Gnatcatcher

Blue-gray Gnatcatcher

Great-tailed Grackle

Tropical Mockingbird

Social Flycatcher

Melodious Blackbird

Yucatán Jay

Brown Jay

Hooded Oriole

Great Kiskadee

Clay-colored Thrush

Yellow-throated Euphonia

Global Distribution

Parks Where Found

Quick answers