
As most of us know, the Monarch population of the entire Eastern United States migrates to Mexico every fall. Millions of adult Monarchs overwinter there in huge “clusters” or colonies in the higher elevations of Mexico’s mountains. We’ve all seen pictures of these colonies, with layers and layers of butterflies hanging from the trees (photo below courtesy of http://goodnature.nathab.com/). These butterflies don't begin their northward migration back to North America until around March.

I was not the only person to see Monarchs on the Eastern Shore over the holidays. Another birder who lives in Cape Charles reported seeing “many” on one of the warm days we had. I reported our sitings to Journey North, as anyone who sees a Monarch here in January or February should do. (http://www.learner.org/jnorth) What a great way for us “regular folks” to contribute to scientific study, especially in a year like this when the climate is out of whack!)
The other species of butterfly that I saw that day was the Clouded Sulphur (photo above), and I saw several. Sulphurs are known to overwinter here in our region in their adult, winged stage. They tuck themselves away into a protected spot where they are sheltered from the elements, and go into a torpid state during the cold months. On unusually warm winter days, they do sometimes emerge to fly and look for food sources.
This has been such a mild winter that many of the bird species that usually migrate here from more northern areas have not arrived in Virginia. Because of this year’s warmer weather, they have been able to find food sources in the north that are not usually available to them, and they have no need to continue their journeys further south. The reduced number of waterfowl in particular has been particularly evident this year; in the past I have seen thousands of Scoters and other sea ducks wintering in the waters along the Bay Bridge-Tunnel, but this year there have been only a handful.
On the other hand, some species that usually migrate to the south of us have stopped here this year for the winter because it is so mild. I'm certain that the weather is responsible for the higher-than-normal numbers of orioles, for example, that are being reported this winter. Last month I blogged about four Baltimore Orioles (photo of one of them, above) that were visiting my yard and my sugar water and grape jelly feeders; I'm please to tell you that they are still here, and the group has increased to at least six individuals! The only problem is that most days it's so warm that the honeybees are flying, and they compete with the orioles for the sugar water!
Last winter was bitterly cold and we had several snowstorms including the famous one that dropped 14 inches of snow on Chesapeake. This year it's so warm that bees are flying and some of my perennial flowers are actually blooming right now. I don't know what that means for the state of our planet, but it certainly makes for interesting and diverse wildlife watching year to year.












At the back pond of the refuge, I saw about fifty Snowy Egrets gathered to feed before their flight south. Snowies are migratory waders, although I have seen a very few overwintering birds here. The individual in the photo above is of a juvenile Snowy Egret; you can tell this by the yellow "racing stripes" on the back of its legs. The adults have yellow feet but not this coloring on the legs.
Common Green Darners, a large species of dragonfly, were everywhere, frantically breeding and laying their eggs before the temperatures drop. The adults will die very soon, but their eggs will survive to produce nymphs, which will emerge as adult dragonflies next year. The photo above is of a male; notice he has vivid green upperparts and a bright blue abdomen. Gorgeous!
I continued north to Chincoteague, and stopped at a little pullover along the causeway that is a reliable spot to see lots of American Oystercatchers at a low tide, when the oyster shoals are exposed. These stunning birds are true to their name, and use that enormous red bill to pry open oysters.
Everyone is familiar with the Great Blue Heron; less familiar is the Little Blue Heron (photo above). Little Blues are much smaller than the Great Blues, about the same size as the Snowy Egret. Their habitat preferences are in more secluded, less populated places, and you probably won’t see one at your neighborhood pond in the suburbs.










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