Title: Pine Siskin close up
Location: Wasatch Mountains, Morgan County, Utah
Date: 8/6/2018
Title: Pine Siskin close up
Location: Wasatch Mountains, Morgan County, Utah
Date: 8/6/2018
Title: Pine Siskin on a Musk Thistle
Location: Wasatch Mountains, Morgan County, Utah
Date: 8/6/2018
Title: Great Spangled Fritillary female on a Musk Thistle
Location: Wasatch Mountains, Morgan County, Utah
Date: 7/26/2018
The thistle is non-native
Title: Male American Goldfinch perched on a dried Musk Thistle blossom
Location: Wasatch Mountains, Summit County, Utah
Date: 7/26/2018
Title: Musk Thistle with dark background
Location: Wasatch Mountains, Summit County, Utah
Date: 7/6/2018
Nonnative
Title: Musk Thistle in bloom
Location: Wasatch Mountains, Summit County, Utah
Date: 7/6/2018
Nonnative
Title: Musk Thistle in morning light
Location: Wasatch Mountains, Summit County, Utah
Date: 7/6/2018
Nonnative
Title: American Goldfinch perched on a Musk Thistle
Location: Wasatch Mountains, Summit County, Utah
Date: 7/6/2018
Title: Musk Thistle and American Goldfinch
Location: Wasatch Mountains, Summit County, Utah
Date: 7/6/2018
Title: American Goldfinch feeding on thistle seeds
Location: Wasatch Mountains, Summit County, Utah
Date: 7/6/2018
Title: American Goldfinch singing on top of Musk Thistle
Location: Wasatch Mountains, Summit County, Utah
Date: 7/6/2018
Title: American Goldfinch with flying thistle fluff
Location: Wasatch Mountains, Summit County, Utah
Date: 7/6/2018
Title: American Goldfinch with falling thistle fluff
Location: Wasatch Mountains, Summit County, Utah
Date: 7/6/2018
Title: American Goldfinch male in breeding plumage on a Musk Thistle
Location: Wasatch Mountains, Summit County, Utah
Date: 7/6/2018
Title: Female American Goldfinch in dandelions
Location: Wasatch Mountains, Morgan County, Utah
Date: 5/24/2018
Title: Male Checkered White butterfly nectaring on a thistle
Location: Bear River Migratory Bird Refuge, Box Elder County, Utah
Date: 7/19/2015
Title: Great Basin Bumble Bee flying next to a Musk Thistle
Location: Cascade Springs, Wasatch National Forest, Wasatch County, Utah
Date: 7/9/2015
Title: Great Basin Bumble Bee on a thistle blossom
Location: Cascade Springs, Wasatch National Forest, Wasatch County, Utah
Date: 7/9/2015
Title: Horrible Thistle
Location: Honeymoon Island State Park, Pinellas County, FL
Date: 3/21/2008
Native