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Most plants are not severely affected by the aphids, but some can be. Check out what galls you may find when you are next walking in the woods!
The Land Conservancy for Southern Chester County is a non-profit charitable organization based in Chester County, PA. Our mission is to ensure the perpetual preservation and stewardship of open space, natural resources, historic sites, and working agricultural lands throughout southern Chester County.
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Hummingbird Moth |
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Black Swallowtail |
This is a hayfield to meadow conversion that was done by seed. This photo was taken in year 4. |
Here’s another mystery of nature:
No one knows why they do it. Yet each fall, thousands
of starlings dance in the twilight above England and Scotland.
The birds gather in shape-shifting flocks called
murmurations, having migrated in the millions from Russia and Scandinavia to escape winter’s frigid bite. Scientists aren’t sure
how they do it, either.
The starlings' murmurations are manifestations of
swarm intelligence, which in different contexts is practised by schools of
fish, swarms of bees and colonies of ants. As far as I am aware, even complex
algorithmic models haven’t yet explained the starlings’ aerobatics, which
rely on the tiny birds' quicksilver reaction time of under 100 milliseconds
to avoid aerial collisions—and predators—in the giant flock.
Despite their tour de force in the dusky sky,
starlings have declined significantly in the UK in recent years, perhaps because of a decline in
suitable nesting sites. The birds still roost in several of Britain’s rural pastures, however, settling down to
sleep (and chatter) after their evening ballet.
Two young ladies were out for a late afternoon canoe
ride and fortunately one of them remembered to bring her video camera. What
they saw was a wonderful murmuration display, caught in the short video - URL
is below. Watch the variation of colour and intensity of the patterns that
the birds make in proximity to one other. And take a look at the girl in the bow
of the canoe watching the aerial display.
Enjoy.
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