Willet

Willet

Tringa semipalmata

Least ConcernNear ThreatenedVulnerableEndangeredCritically Endangered
Daily sighting probability <5% · Rare
at Saguaro National Park
40 Verified sightings at Saguaro National Park From 2019 to 2026
9,362 Verified sightings across all 61 parks From 2019 to 2026
April Best month highest sighting rate
☀️ Diurnal When it's spotted during daytime hours (6am–6pm)

About the Willet

The willet (Tringa semipalmata) is a large shorebird in the family Scolopacidae. It is a relatively large and robust sandpiper and is the largest of the species called "shanks" in the genus Tringa. Its closest relative is the lesser yellowlegs, a much smaller bird with a very different appearance apart from the fine, clear, and dense pattern of the neck, which both species show in breeding plumage. It breeds in North America and the West Indies and winters in southern North America, Central America, the West Indies and South America.

The willet was formally described in 1789 by the German naturalist Johann Friedrich Gmelin in his revised and expanded edition of Carl Linnaeus's Systema Naturae. He placed it in the genus Scolopax and coined the binomial name Scolopax semipalmata. Gmelin based his description on the "semipalmated snipe" from New York that had been described in 1785 by both the English ornithologist John Latham and by the Welsh naturalist Thomas Pennant. The willet was formerly assigned to the genus Catoptrophorus that had been introduced for the species in 1827 by Charles Lucien Bonaparte. In 2006 it was moved to the current genus Tringa based on a molecular... Wikipedia →

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 Ría Lagartos Biosphere Reserve 🇲🇽 Mexico
~50%
2 El Vizcaíno Biosphere Reserve 🇲🇽 Mexico
~50%
3 Celestún Biosphere Reserve 🇲🇽 Mexico
~40%
4 Ostional Wildlife Refuge 🇨🇷 Costa Rica
~40%
5 Bahía de Loreto National Park 🇲🇽 Mexico
~30%
6 Las Baulas Marine National Park 🇨🇷 Costa Rica
~20%
7 Channel Islands National Park 🇺🇸 United States
~20%
8 Cabo Blanco Absolute Nature Reserve 🇨🇷 Costa Rica
~20%
9 Marino Ballena National Park 🇨🇷 Costa Rica
~20%
10 Coiba National Park 🇵🇦 Panama
~20%
11 Arrecifes de Cozumel National Park 🇲🇽 Mexico
~10%
12 Ciénaga de Zapata 🇨🇺 Cuba
~10%
13 Jaragua National Park 🇩🇴 Dominican Republic
~10%
14 Everglades National Park 🇺🇸 United States
~10%
15 Tortuguero National Park 🇨🇷 Costa Rica
~10%
16 Santa Rosa National Park 🇨🇷 Costa Rica
~10%
17 Paracas National Reserve 🇵🇪 Peru
~10%
18 Utría National Natural Park 🇨🇴 Colombia
~10%
19 Cahuita National Park 🇨🇷 Costa Rica
~10%
20 Gandoca-Manzanillo Wildlife Refuge 🇨🇷 Costa Rica
~10%
21 Piedras Blancas National Park 🇨🇷 Costa Rica
<5%
22 Corcovado National Park 🇨🇷 Costa Rica
<5%
23 Death Valley National Park 🇺🇸 United States
<5%
24 La Amistad International Park (Panama) 🇵🇦 Panama
<5%
25 Bastimentos Island National Marine Park 🇵🇦 Panama
<5%
26 Machalilla National Park 🇪🇨 Ecuador
<5%
27 Tayrona National Natural Park 🇨🇴 Colombia
<5%
28 Manuel Antonio National Park 🇨🇷 Costa Rica
<5%
29 Palo Verde National Park 🇨🇷 Costa Rica
<5%
30 Sian Ka'an Biosphere Reserve 🇲🇽 Mexico
<5%
31 Big Cypress National Preserve 🇺🇸 United States
<5%
32 Darién National Park 🇵🇦 Panama
<5%
33 Point Pelee National Park 🇨🇦 Canada
<5%
34 Galápagos Islands 🇪🇨 Ecuador
<5%
35 Carara National Park 🇨🇷 Costa Rica
<5%
36 Yellowstone National Park 🇺🇸 United States
<5%
37 Acadia National Park 🇺🇸 United States
<5%
38 Grand Canyon National Park 🇺🇸 United States
<5%
39 Sequoia and Kings Canyon National Parks 🇺🇸 United States
<5%
40 Rocky Mountain National Park 🇺🇸 United States
<5%
41 Glacier National Park 🇺🇸 United States
<5%
42 Saguaro National Park 🇺🇸 United States
<5%
43 Olympic National Park 🇺🇸 United States
<5%
44 Isla del Coco National Park 🇨🇷 Costa Rica
Insufficient data
45 Gros Morne National Park 🇨🇦 Canada
Insufficient data
46 Shenandoah National Park 🇺🇸 United States
Insufficient data
47 Biotopo Cerro Cahuí 🇬🇹 Guatemala
Insufficient data
48 San Lorenzo Protected Forest 🇵🇦 Panama
Insufficient data
49 Riding Mountain National Park 🇨🇦 Canada
Insufficient data
50 Elk Island National Park 🇨🇦 Canada
Insufficient data
51 Cape Breton Highlands National Park 🇨🇦 Canada
Insufficient data
52 Badlands National Park 🇺🇸 United States
Insufficient data
53 Caroni Swamp 🇹🇹 Trinidad and Tobago
Insufficient data
54 Grand Teton National Park 🇺🇸 United States
Insufficient data
55 Redwood National Park 🇺🇸 United States
Insufficient data
56 Parque Natural Metropolitano 🇵🇦 Panama
Insufficient data
57 Chagres National Park 🇵🇦 Panama
Insufficient data
58 Zion National Park 🇺🇸 United States
Insufficient data
59 Big Bend National Park 🇺🇸 United States
Insufficient data
60 Arenal Volcano National Park 🇨🇷 Costa Rica
Insufficient data
61 Yosemite National Park 🇺🇸 United States
Insufficient data

Quick answers

What are the chances of seeing a Willet in Saguaro National Park?

Under 5% of wildlife watchers report a Willet sighting in Saguaro National Park, based on 40 verified sightings from GBIF citizen-science data.

When is the best time to see Willet in Saguaro National Park?

April has the highest sighting rate for Willet in Saguaro National Park in our monthly data.

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