Event 21

United Kingdom
Birds laying eggs early. From 1971 to 1995, 31 percent of 65 bird species studied in England showed significant trends towards earlier egg laying, moving up the date by an average of 8.8 days.

Photo: Dr. Andrew Gosler, Oxford University, checking nest boxes of Great Tits. Studies of these birds have showed significant trends towards earlier egg laying.

Event 10: Heat wave. Event 20: Frogs spawning early. Event 21: Birds laying eggs early. Event 22: Early leafing of trees. Event 28: Butterfly range shift. Event 31: Alpine meadow changes. Event 32: Penguin decline. Event 33: Sea bird decline. Event 35: Shoreline sea life shifting. Event 36: Disappearing toads. Event 65: Retreating Glaciers. Event 68: Permafrost thawing. Event 69: Snow-cover decrease. Event 70: Warming of Antarctica. Event 109: Decrease in hibernation. Event 117: Antarctic plants change. Event 137: Thinning of ice sheet.

Gary Braasch, who documents climate change through photography, provided us with these photographs. Many more examples of his work can be found on his web site, World View of Global Warming, http://www.worldviewofglobalwarming.org.