All trips are scheduled for Saturdays, with Sundays being a rain date.
When birding, we will do our best to abide by the American Birding Asociation's Code of Birding Ethics.
Click Here to review the Code of Birding Ethics.

In addition to this schedule, on Friday mornings April 7 - June 23 join the naturalists from Retzer Nature Center and Benjamin Goss Bird Club as we set out to discover who’s chirping on the trails. We’ll explore habitats, welcome back spring migrants and check on our year-round residents. Binoculars are available on a limited basis. No reservations needed. Meet in the parking lot. Time: 7:00-8:30 am. FEE: $2.00 per person per class paid to Retzer Nature Center.

Click Here for a printable version of the field trip schedule.

May 27

7:00 AM

MONCHES WOODS - RESCHEDULED FROM 5/20 (Vernon Marsh hike has been canceled)

Monches Woods is a unique property containing both the Oconomowoc and Little Oconomowoc Rivers. While our main goal will be to find a singing Louisiana Waterthrush, nesting Blue-winged Warblers and Acadian Flycatchers call this their summer home, and there’s an outside shot for a Red-shouldered Hawk sighting, so this is a bird hike you don’t want to miss! While much of the topography is quite hilly and can be a difficult hike for some folks, this year we will be guided by John Winze whose family owns property lending us a “back door” entrance to the woods with fewer hills to climb!

Before heading to the bird hike location we will meet at Mary Korkor's house at 6:45 and we will carpool to the Winze property. After the bird hike, attendees are welcome to gather back at Mary's for brunch/lunch. Bring your own lunch and relax with the birds in Mary's fine garden to socialize with birders and birds!

If you wish to attend, please contact Tim Hahn for specific directions. (

June 4

7:00 AM


Beulah Bog lies in a series of four kettle holes and features an undisturbed bog with many unusual plants more typical of northern bogs. Anne Moretti has been surveying this location for the WBBA II, and will lead us on a hike to enjoy this unique natural place.

June 24

7:00 AM

Kayak the Fox

South of Waukesha the Fox River flows travels through extensive natural areas including many wooded areas and the Vernon State Wildlife Area, aka Vernon Marsh. Paddling on the river will give us a unique perspective from which to observe birds that, for one reason or another, seem to ignore people in paddle boats.

We will start the paddle from the Fox River Park on Hwy H. The first take out option is at Cty I after about 5 miles; this stretch takes about 2 hours to complete. Intrepid paddlers may continue on through the Vernon Marsh and take out at Cty ES (National Ave) which is about another five miles; this leg will take another 2 to 3 hours. Kayaks and canoes are welcome, but we unfortunately do not have extras available. If you would like to participate in the paddle, contact Tim Hahn (