, but this code // executes before the first paint, when

Â鶹Çø

is not yet present. The // classes are added to so styling immediately reflects the current // toolbar state. The classes are removed after the toolbar completes // initialization. const classesToAdd = ['toolbar-loading', 'toolbar-anti-flicker']; if (toolbarState) { const { orientation, hasActiveTab, isFixed, activeTray, activeTabId, isOriented, userButtonMinWidth } = toolbarState; classesToAdd.push( orientation ? `toolbar-` + orientation + `` : 'toolbar-horizontal', ); if (hasActiveTab !== false) { classesToAdd.push('toolbar-tray-open'); } if (isFixed) { classesToAdd.push('toolbar-fixed'); } if (isOriented) { classesToAdd.push('toolbar-oriented'); } if (activeTray) { // These styles are added so the active tab/tray styles are present // immediately instead of "flickering" on as the toolbar initializes. In // instances where a tray is lazy loaded, these styles facilitate the // lazy loaded tray appearing gracefully and without reflow. const styleContent = ` .toolbar-loading #` + activeTabId + ` { background-image: linear-gradient(rgba(255, 255, 255, 0.25) 20%, transparent 200%); } .toolbar-loading #` + activeTabId + `-tray { display: block; box-shadow: -1px 0 5px 2px rgb(0 0 0 / 33%); border-right: 1px solid #aaa; background-color: #f5f5f5; z-index: 0; } .toolbar-loading.toolbar-vertical.toolbar-tray-open #` + activeTabId + `-tray { width: 15rem; height: 100vh; } .toolbar-loading.toolbar-horizontal :not(#` + activeTray + `) > .toolbar-lining {opacity: 0}`; const style = document.createElement('style'); style.textContent = styleContent; style.setAttribute('data-toolbar-anti-flicker-loading', true); document.querySelector('head').appendChild(style); if (userButtonMinWidth) { const userButtonStyle = document.createElement('style'); userButtonStyle.textContent = `#toolbar-item-user {min-width: ` + userButtonMinWidth +`px;}` document.querySelector('head').appendChild(userButtonStyle); } } } document.querySelector('html').classList.add(...classesToAdd); })(); Preserve | Weekend Wonder: Sat, Apr 11 2026, 10 - 11:30am | Â鶹Çø

Â鶹Çø

Skip to main content

Events Calendar

S M T W T F S
29
 
30
 
31
 
1
 
2
 
3
 
4
 
5
 
6
 
7
 
8
 
9
 
10
 
11
 
12
 
13
 
14
 
15
 
16
 
17
 
18
 
19
 
20
 
21
 
22
 
23
 
24
 
25
 
26
 
27
 
28
 
29
 
30
 
1
 
2
 
View Today

Add to Your Calendar:

Add to iCal

Preserve | Weekend Wonder

  • Sat, Apr 11, 2026
  • 10:00 am–11:30 am

Bunker Interpretive Center

Weekend Wonder header
Discover nature year-round through Weekend Wonder—a monthly Saturday series of expert-led programs for curious adults and kids alike.

We believe that wonder knows no season so bring your curiosity to this once-a-month Saturday series. Held at the Bunker Interpretive Center, we're bringing in experts of all kinds to increase your knowledge, skills, and joy for the world around us

Weekend Wonder is for adults and older children. Activities for children 3 & up provided by our environmental educators!

More information coming soon! 

Follow us on Instagram and Facebook (@calvinecopreserve) 

Address

Bunker Interpretive Center

1750 E Beltline Ave SE
Grand Rapids, MI 49546
United States

42.931902914773, -85.58274155

Contact:

Tom Hartzell
Campus Sustainability Program Coordinator
616-526-6238

Loading...