Chestnut-sided Warbler
Chestnut-sided WarblerChestnut-sided WarblerChestnut-sided WarblerChestnut-sided Warbler

Chestnut-sided Warbler

Setophaga pensylvanica

Least ConcernNear ThreatenedVulnerableEndangeredCritically Endangered
Daily sighting probability <5% · Rare
at Saguaro National Park
458 Verified sightings at Saguaro National Park From 2019 to 2026
38,770 Verified sightings across all 76 parks From 2019 to 2026
November Best month highest sighting rate
☀️ Diurnal When it's spotted during daytime hours (6am–6pm)

About the Chestnut-sided Warbler

The chestnut-sided warbler (Setophaga pensylvanica) is a New World warbler. They breed in eastern North America and in southern Canada westwards to the Canadian Prairies. They also breed in the Great Lakes region and in the eastern United States.

The chestnut-sided warbler was formally described in 1766 by the Swedish naturalist Carl Linnaeus in the twelfth edition of his Systema Naturae under the binomial name Motacilla pensylvanica. Linnaeus based his account on the "Red-throated fly-catcher" that had been described and illustrated in 1760 by the English naturalist George Edwards in his book Gleanings of Natural History. Edwards had received specimens from the American naturalist William Bartram that had been collected in Pennsylvania. The chestnut-sided warbler is now one of more than 30 species placed in the genus Setophaga that was introduced in 1827 by the English naturalist William Swainson. The genus name Setophaga combines the Ancient Greek σης/sēs, σητος/sētos meaning "moth" with -φαγος/-phagos meaning "-eating". The species is monotypic: no subspecies are recognised.

Setophaga icterocephala is a junior synonym of S. pennsylvanicus, and is no longer used. The... Wikipedia →

Closest Relatives at Saguaro National Park

Yellow-rumped Warbler
LC

Yellow-rumped Warbler

☀️ Diurnal Bird

Setophaga coronata

Daily sighting probability ~40% · Likely
Yellow Warbler
LC Endemic

Yellow Warbler

☀️ Diurnal Bird

Setophaga petechia

Daily sighting probability ~20% · Possible
Northern Yellow Warbler

Northern Yellow Warbler

☀️ Diurnal Bird

Setophaga aestiva

Daily sighting probability ~20% · Possible
Audubon's Warbler

Audubon's Warbler

☀️ Diurnal Bird

Setophaga auduboni

Daily sighting probability ~10% · With luck
Black-throated Gray Warbler
LC

Black-throated Gray Warbler

☀️ Diurnal Bird

Setophaga nigrescens

Daily sighting probability ~10% · With luck
Northern Parula
LC

Northern Parula

☀️ Diurnal Bird

Setophaga americana

Daily sighting probability <5% · Rare
Townsend's Warbler
LC

Townsend's Warbler

☀️ Diurnal Bird

Setophaga townsendi

Daily sighting probability <5% · Rare
Yellow-throated Warbler
LC

Yellow-throated Warbler

☀️ Diurnal Bird

Setophaga dominica

Daily sighting probability <5% · Rare
Hermit Warbler
LC

Hermit Warbler

☀️ Diurnal Bird

Setophaga occidentalis

Daily sighting probability <5% · Rare
Pine Warbler
LC Endemic

Pine Warbler

☀️ Diurnal Bird

Setophaga pinus

Daily sighting probability <5% · Rare
Black-throated Blue Warbler
LC

Black-throated Blue Warbler

☀️ Diurnal Bird

Setophaga caerulescens

Daily sighting probability <5% · Rare
Blackburnian Warbler
LC

Blackburnian Warbler

☀️ Diurnal Bird

Setophaga fusca

Daily sighting probability <5% · Rare

Global Distribution

Where this species is recorded worldwide. Restricted to human observations from 2019 onwards — the same kind of record and the same period the probabilities on this page are built from, so collar-tracking studies, camera-trap arrays and museum specimens are excluded. Around Santa Rosa that removes 5,924 GPS fixes from a handful of tagged jaguars.

where this species is recorded (GBIF density — it tracks where observers go, not how likely a sighting is)  ·  parks where it occurs — tap a pin for the sighting probability there

Parks Where Found

# Park Country Daily sighting probability
1 Arenal Volcano National Park 🇨🇷 Costa Rica
~50%
2 Tenorio Volcano National Park 🇨🇷 Costa Rica
~40%
3 Carara National Park 🇨🇷 Costa Rica
~40%
4 Riding Mountain National Park 🇨🇦 Canada
~40%
5 Braulio Carrillo National Park 🇨🇷 Costa Rica
~40%
6 Point Pelee National Park 🇨🇦 Canada
~40%
7 Piedras Blancas National Park 🇨🇷 Costa Rica
~40%
8 Pico Bonito National Park 🇭🇳 Honduras
~30%
9 San Lorenzo Protected Forest 🇵🇦 Panama
~30%
10 Cerro Azul Meámbar National Park 🇭🇳 Honduras
~30%
11 Voyageurs National Park 🇺🇸 United States
~30%
12 Montes Azules Biosphere Reserve 🇲🇽 Mexico
~30%
13 Bastimentos Island National Marine Park 🇵🇦 Panama
~30%
14 Corcovado National Park 🇨🇷 Costa Rica
~30%
15 Cockscomb Basin Wildlife Sanctuary 🇧🇿 Belize
~30%
16 Manuel Antonio National Park 🇨🇷 Costa Rica
~20%
17 Tikal National Park 🇬🇹 Guatemala
~20%
18 Soberanía National Park 🇵🇦 Panama
~20%
19 Cahuita National Park 🇨🇷 Costa Rica
~20%
20 La Amistad International Park (Panama) 🇵🇦 Panama
~20%
21 Cusuco National Park 🇭🇳 Honduras
~20%
22 Tortuguero National Park 🇨🇷 Costa Rica
~20%
23 Gandoca-Manzanillo Wildlife Refuge 🇨🇷 Costa Rica
~20%
24 Isle Royale National Park 🇺🇸 United States
~20%
25 Lago de Yojoa 🇭🇳 Honduras
~20%
26 Marino Ballena National Park 🇨🇷 Costa Rica
~10%
27 Tapantí-Macizo de la Muerte National Park 🇨🇷 Costa Rica
~10%
28 Parque Natural Metropolitano 🇵🇦 Panama
~10%
29 Chirripó National Park 🇨🇷 Costa Rica
~10%
30 Chagres National Park 🇵🇦 Panama
~10%
31 Biotopo Cerro Cahuí 🇬🇹 Guatemala
~10%
32 Rincón de la Vieja National Park 🇨🇷 Costa Rica
~10%
33 Coiba National Park 🇵🇦 Panama
~10%
34 Great Smoky Mountains National Park 🇺🇸 United States
~10%
35 Cabo Blanco Absolute Nature Reserve 🇨🇷 Costa Rica
~10%
36 Monteverde Cloud Forest Reserve 🇨🇷 Costa Rica
~10%
37 Acadia National Park 🇺🇸 United States
<5%
38 Darién National Park 🇵🇦 Panama
<5%
39 Shenandoah National Park 🇺🇸 United States
<5%
40 Santa Rosa National Park 🇨🇷 Costa Rica
<5%
41 Celestún Biosphere Reserve 🇲🇽 Mexico
<5%
42 Cañón del Sumidero National Park 🇲🇽 Mexico
<5%
43 Elk Island National Park 🇨🇦 Canada
<5%
44 Blue and John Crow Mountains National Park 🇯🇲 Jamaica
<5%
45 Arrecifes de Cozumel National Park 🇲🇽 Mexico
<5%
46 Calakmul Biosphere Reserve 🇲🇽 Mexico
<5%
47 Ostional Wildlife Refuge 🇨🇷 Costa Rica
<5%
48 Cape Breton Highlands National Park 🇨🇦 Canada
<5%
49 Irazú Volcano National Park 🇨🇷 Costa Rica
<5%
50 Sian Ka'an Biosphere Reserve 🇲🇽 Mexico
<5%
51 Congaree National Park 🇺🇸 United States
<5%
52 Las Baulas Marine National Park 🇨🇷 Costa Rica
<5%
53 Los Quetzales National Park 🇨🇷 Costa Rica
<5%
54 Saguaro National Park 🇺🇸 United States
<5%
55 Tayrona National Natural Park 🇨🇴 Colombia
<5%
56 Palo Verde National Park 🇨🇷 Costa Rica
<5%
57 Masaya Volcano National Park 🇳🇮 Nicaragua
<5%
58 Everglades National Park 🇺🇸 United States
<5%
59 Big Bend National Park 🇺🇸 United States
<5%
60 Farallones de Cali National Natural Park 🇨🇴 Colombia
<5%
61 Channel Islands National Park 🇺🇸 United States
<5%
62 Olympic National Park 🇺🇸 United States
<5%
63 Yosemite National Park 🇺🇸 United States
Insufficient data
64 La Tigra National Park 🇭🇳 Honduras
Insufficient data
65 El Triunfo 🇲🇽 Mexico
Insufficient data
66 Poás Volcano National Park 🇨🇷 Costa Rica
Insufficient data
67 Los Haitises National Park 🇩🇴 Dominican Republic
Insufficient data
68 Ría Lagartos Biosphere Reserve 🇲🇽 Mexico
Insufficient data
69 Volcán Barú National Park 🇵🇦 Panama
Insufficient data
70 Ciénaga de Zapata 🇨🇺 Cuba
Insufficient data
71 Redwood National Park 🇺🇸 United States
Insufficient data
72 Guadalupe Mountains National Park 🇺🇸 United States
Insufficient data
73 El Vizcaíno Biosphere Reserve 🇲🇽 Mexico
Insufficient data
74 Pacific Rim National Park Reserve 🇨🇦 Canada
Insufficient data
75 Joshua Tree National Park 🇺🇸 United States
Insufficient data
76 Rocky Mountain National Park 🇺🇸 United States
Insufficient data

Quick answers

What are the chances of seeing a Chestnut-sided Warbler in Saguaro National Park?

Under 5% of wildlife watchers report a Chestnut-sided Warbler sighting in Saguaro National Park, based on 458 verified sightings from GBIF citizen-science data.

When is the best time to see Chestnut-sided Warbler in Saguaro National Park?

November has the highest sighting rate for Chestnut-sided Warbler in Saguaro National Park in our monthly data.

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