Our Tulip Tree, Wisconsin
While we don't usually see Tulip Trees in Wisconsin, we have one that was planted over 30 years ago, and it's still doing OK.  Here's a Grey Squirrel in our tree
Canon EOS 40D, Canon EF 70-200 f/2.8 IS USM
1/400s f/4.5 at 190mm ISO-200
January 9, 2011 2:46pm

Our Backyard—Waukesha, Wisconsin
Gray Squirrel enjoying unsalted peanuts that we provide for them (I was about 3 feet away, on the other side of a patio door)
Canon EOS 7D, Canon EF-S 17-55mm f/2.8 IS USM
1/60s f/2.8 at 40mm ISO-200
November 23, 2010 11:40am

Zion National Park, Utah
Back in 2008 I was in Zion and took a picture of a gray squirrel (below), so it was fitting to find other one on this visit to the park
Canon EOS 40D, Canon EF 100-400mm f/4.5-5.6L IS USM
1/13 f/5.6 at 310mm iso-100
May 2, 2010 6:36pm

Gray Squirrel—Phantom Glen Park—Mukwonago, Wisconsin
Canon EOS 40D, Canon EF 100-400mm f/4.5-5.6L IS USM
1/100s f/5.0 at 250mm iso-100
June 26, 2009 11:16am
 

Grey Squirrel—Gurnee, Illinois
Taken while chaperoning a middle school music group that one of my daughters was part of, to Six Flags Great America, on an overcast (and partly rainy day)
Canon EOS 40D, Canon EF 100-400mm f/4.5-5.6L IS USM
1/40s f/5.6 at 400mm iso-100
June 5, 2009 10:32am
 

Our Backyard—Waukesha, Wisconsin
Gray Squirrel ... in our feeder?  We have a raccoon that comes around and messes things up a bit, so the squirrels take advantage of those situations
Canon EOS 40D, Canon EF 100-400mm f/4.5-5.6L IS USM
1/60s f/5.0 at 210mm iso-200
November 15, 2008 1:19pm
 

Frame Park Flower Garden—Waukesha, Wisconsin
Taken near the trellis in the garden at Frame park, where 28 years ago my wife and I had our wedding pictures taken
Canon EOS 40D, Canon EF 100-400mm f/4.5-5.6L IS USM
1/50s f/5.6 at 320mm iso-400
November 2, 2008 3:36pm
 

Our Backyard—Waukesha, Wisconsin
Gray Squirrel playing in the fall leaves
Canon EOS 40D, Canon EF 100-400mm f/4.5-5.6L IS USM
1/50s f/5.6 at 400mm iso-100
November 2, 2008 3:03pm

Knoch Knolls Park—Naperville, Illinois
Our High School Marching Band performed in Naperville; I was a chaperon and equipment truck driver for the event.  Before heading home, we stopped at this park for some R&R and an impromptu performance.  I found this squirrel there, wondering what all was happening
Canon EOS 40D, Canon EF 100-400mm f/4.5-5.6L IS USM
1/32s f/5.7 at 400mm iso-320
October 5, 2008 11:20am

Grande Lake—Orlando, Florida
This Gray Squirrel was playing in some trees on the JW Marriott Hotel property next to Grande Lake
Canon EOS 40D, Canon EF 100-400mm f/4.5-5.6L IS USM
1/100s f/5.6 at 400mm iso-200
September 24, 2008 9:11am
 

Silver Spring Golf Course—Menomonee Falls, Wisconsin
I saw this guy off the start of the Island Course (I was shooting the foursomes as they went out during a company off-site rally)
Canon EOS 40D, Canon EF 100-400mm f/4.5-5.6L IS USM
1/320s f/7.1 at 400mm iso-400
August 27, 2008 1:50pm
 

Cutler Park—Waukesha, Wisconsin
A pair or Squirrels playing in the trees at Cutler Park (near the Waukesha Public Library).  The park is named after Morris  D. Cutler, one of cities first permanent white settlers
Canon EOS 40D, Canon EF 100-400mm f/4.5-5.6L IS USM
1/83s f/5.7 at 320mm iso-200
August 24, 2008 4:23pm

Old Squirrel Feeder—Waukesha, Wisconsin
While out trying to take a picture of some Chipmunks that have recently found our backyard, this Gray Squirrel came to our munch-box feeder
Canon EOS 30D, Canon EF 100-400mm f/4.5-5.6L IS USM
1/25s f/5.0 at 170mm iso-100
June 30, 2008 4:42pm
 

Waterfront Park—Old Town Alexandria, Virginia
I visited Old Town Alexandria while attending a conference which was across the Potomac River at the Gaylord National Resort & Convention Center.  There are a number of parks along the river which is where I found this guy
Canon EOS 30D, Canon EF 100-400mm f/4.5-5.6L IS USM
1/15s f/5.6 at 400mm iso-100
June 16, 2008 3:55pm
 

Zion National Park, Utah
I took the shuttle ride into Zion's canyon and then hiked the trail to the Zion Narrows.  I was not there long enough to do any serious hiking, which would have been really hard as it was 106°F on this day.  At the start of the trail to the Narrows, this guy was munching on grass
Canon EOS 30D, Canon EF 100-400mm f/4.5-5.6L IS USM
1/125s f/5.0 at 180mm iso-100
May 18, 2008 10:31am
 

Zion National Park, Utah
Another shot of the squirrel above
Canon EOS 30D, Canon EF 100-400mm f/4.5-5.6L IS USM
1/160s f/5.0 at 220mm iso-100
May 18, 2008 10:27am
 

French Island—LaCrosse, Wisconsin
Just over the Minnesota / Wisconsin border, entering LaCrosse via Interstate 94, is a small Rest Area on French Island.  Here's one of the grays who was playing there near the Mississippi River
Canon EOS 30D, Canon EF 100-400mm f/4.5-5.6L IS USM
1/250s f/5.6 at 400mm iso-100
April 21, 2008 5:08pm
 

Boston Common Park—Boston, Massachusetts
After a business meeting, I had an afternoon to myself, so I checked out the Boston Common area, and found a few little guys there
Canon EOS 30D, Canon EF 100-400mm f/4.5-5.6L IS USM
1/320s f/7.1 at 105mm iso-100
April 3, 2008 2:52pm
 

Boston Common Park—Boston, Massachusetts
Same guy as above
Canon EOS 30D, Canon EF 100-400mm f/4.5-5.6L IS USM
1/400s f/7.1 at 170mm iso-100
April 3, 2008 2:52pm
 

Freedom Trail—Boston, Massachusetts
I took a guided walk of the Boston Freedom Trail, and along the way when I wasn't taking in the history, I shot this one
Canon EOS 30D, Canon EF 100-400mm f/4.5-5.6L IS USM
1/400s f/7.1 at 400mm iso-100
April 3, 2008 3:48pm
 

Mariposa Grove—Yosemite National Park, California
Canon EOS 30D, Canon EF 100-400mm f/4.5-5.6L IS USM
1/125s f/5.6 at 400mm iso-100
April 21, 2007 9:01am
 

Our Home—Waukesha, Wisconsin
Another squirrel subject, this time right after I received my 1.4x tele-converter.  This was in my backyard, hand held, manually focused, and maybe only 15 feet away about 5 feet off the ground (he surprised me as much as I surprised him)
Canon EOS 30D, Canon EF 100-400mm f/4.5-5.6L IS USM, Canon EF 1.4X II
1/160s f/7.1 at 280mm iso-400
March 25, 2007 12:32pm

Our Home—Waukesha, Wisconsin
I feed squirrels year-round and this guy was one of my first subjects when my 100-400mm arrived.  He was sunning on the neighbor's deck when I shot this (he must have been wondering what I was doing when I aimed the lens at him)
Canon EOS 30D, Canon EF 100-400mm f/4.5-5.6L IS USM
1/40s f/5.6 at 400mm iso-100
September 17, 2006 3:20pm