Wind dancers

A white gull feather was drifting on the wind. Then a raven swooped to snap it up, dropped the feather, and caught it again: 

These two were dancing over the sea:

Whitecaps below:

Sundog

Morning

Neon sky

Scrub Jay awaiting peanuts

Moon and Venus (the tiny pixel at lower left)

Nesting season is over, but bluebirds still use these boxes for shelter

White beauty

Reflection

Funereal Duskywing

After rain

Snowy Egret

Black-Crowned Night Heron

Floating algae

More egrets

Another swoops in...

Leading to a chase through a crowd of ducks

Portrait of a cormorant

Juvenile Great Blue Heron

Crayfish on land, raising its claws at me in a threat display

Tiny shelf fungus on a fallen log

Bluebird stretching

The nest of a Scaly-Breasted Munia-- I heard chirping from within the ball of pine needles

McMurdo Sound, Antarctica

This image of an ice wall and the ocean floor at Explorer's Cover, New Harbor, McMurdo Sound is adjacent to remote-controlled photographic equipment. An underwater camera is connected by cable to onshore facilities, which upload images to the Internet via radio signals.

Frosty leaves

Frozen starfish

A clip from the BBC showing a bizarre phenomenon called a "brinicle" (brine-icicle) and the destruction it wreaks on local life-forms:

Via TYWKIWDBI.

Late summer evenings

Storms and tremors

The University of Hawaii has a collection of infrasound recordings, collected from various natural phenomena and converted into audible sounds:

One of the techniques we use to grasp these inaudible sounds is to make them audible through time compression (speeding up), pitch shifting (frequency transposition), or other methods...
Signal processing algorithms were used to make them audible and occasionally pleasant. Many of the sound files are complex, and superpose breaking waves, distant storms, aircraft, and volcanoes.

My favorites are this one from a hurricane, and this one from the Icelandic volcano Hekla.

Link via Bouphonia.

Fiery clouds

Ice leaves

I discovered this ice formation on the surface of a bucket that had filled with rainwater, and held it up to the morning sun.