Date: Saturday, May 25, 2013
Weather: Partly Cloudy
Temperature: 45ºF
Time: 9:00 AM -10:00 AM
Location: Union Bay
Natural Area, Seattle, WAIt’s time to take a look at how things have changed over the course of the quarter! Here’s a before and after view of my observation site. Notice how the observation site transitions from bare to lush green!
Left, view from week 1. Right, view from week 8.
The forest floor is now completely covered in grasses, shrubs, and horsetails
and all of the trees are draped with leaves.
Left, view from week 1. Right, view from week 8.
The grasses and Yellow Iris in the marsh are prolific growers and after a
couple of weeks, the surface of the marsh is barely visible because of all of
the foliage.
The wave of cotton-like seeds from the Black Cottonwoods have diminished and
the foam from the Meadow Spittlebugs has
also gone away (they must have hatched!). There are many, many gnats (Dipterid) flying about and there are spider webs along many of the
branches. The Himalayan Blackberry flower
buds are almost ready to bloom. Despite all of these exciting changes, the main
action today was focused on one thing – nest building.
It’s actually become quite difficult to find birds now that there is so much foliage. The grasses have grown up to head height (a little over five feet)! But before I get to the nest building, I want to share a few little surprises I found while trying to follow the birds.
Hiding between two shrubs and growing on a dead log was some Artist’s Conch (Ganoderma applanatum). Since it was growing underneath a Black Cottonwood and commonly grows on poplar trees, I would presume the dead branch fell from the Black Cottonwood sometime earlier. There were around six spore bodies growing on the dead branch and they weren’t more than 2 inches wide. The Artist’s Conch had matured so the top-side was a red-brown color and the underside is its characteristic white that can be used as a drawing medium. Each spore body seemed to start growing from crevices in the branch or at a branch knot.
The second surprise was also a fungus find. In
the leaf litter where I had been looking for invertebrate a few weeks ago, a
patch of Mica Cup (Coprinellus micaceus) has sprung out of nowhere.
The cluster of Mica Cup is growing near the underground roots of a Black
Cottonwood. To confirm that the Mica Cup is new, I took a look at their gill
color, which is currently a white to light brown color. As the Mica Cup ages
and the spores mature, the gills will turn black.It’s actually become quite difficult to find birds now that there is so much foliage. The grasses have grown up to head height (a little over five feet)! But before I get to the nest building, I want to share a few little surprises I found while trying to follow the birds.
Hiding between two shrubs and growing on a dead log was some Artist’s Conch (Ganoderma applanatum). Since it was growing underneath a Black Cottonwood and commonly grows on poplar trees, I would presume the dead branch fell from the Black Cottonwood sometime earlier. There were around six spore bodies growing on the dead branch and they weren’t more than 2 inches wide. The Artist’s Conch had matured so the top-side was a red-brown color and the underside is its characteristic white that can be used as a drawing medium. Each spore body seemed to start growing from crevices in the branch or at a branch knot.
Tucked away are many Artist’s Conch spore
bodies!
A cluster of Mica Cup growing along the underground
root of a Black Cottonwood.
Now, the only reason I had stumbled upon these
fungi is because I was trying to observe a White-Crowned
Sparrow (Zonotrichia leucophrys).
The first thing that caught my eye was the black and white stripes moving from
one branch to another. This White-Crowned Sparrow was hopping from branch to branch
within a Himalayan Blackberry shrub
and neatly dodged all of the spines. It would peck at the branches every so
often and would even hang upside down on a branch. My guess is that it was
finding twigs to build a nest nearby and marking its territory when it sang.
A White-Crowned Sparrow (center of picture) that continued to hop
along branches and overturn leaves.
Meanwhile, up in the sky, a Bald Eagle (Halieaeetus
leucocephalus) flew by carrying a foot-long branch and headed for its nest.
Also flying by were a pair (one male and one female) of Northern Shovelers. The pair flew back and forth between the marsh
area in my observation site and a nearby pond. It was difficult for me to tell
if they were just feeding at different spots, finding a nesting location, or
finding vegetation to add to their nest. The sky was also dotted with Barn Swallows (Hirundo rustica) and Violet-green
Swallows. Being the social birds they are, they flew in an irregular
pattern up above, chattering away and also darting around to eat insects. I was
surprised that the two species of swallows seemed at peace with each other even
though they were competing for the same food resource.
Social barn and violet-green swallows flying high above my head.
A male Red-Winged Blackbird guarding its
territory.
The last thing that caught my eye today was a
huge toppled over Black Cottonwood tree.
Since it was a little farther out from my site, I hadn’t noticed it until now.
The tree could have been toppled over a few weeks ago during the thunder and
windstorm. It is a massive tree that is now partially blocking the water flow
between Lake Washington and the little marsh nearby. The now stagnant waters
appear to be home to many gnats. Since the area has experienced a great
disturbance, many Bull Thistle (Cirsium vulgare) have begun to grow.
Even an impressive Black Cottonwood is no match
for the extreme weather nature brings.
It is incredible how much my observation site
has transformed throughout the past eight weeks. It seems like just yesterday
that I entered the site and brown was the major color I saw, but now the
grasses are my height and almost every square inch of ground is covered in
green. Not to mention, the bird activity (and bird sounds) have tripled over
the past eight weeks. When I first began my observations, there were few birds
flying about, but this week it is clearly nesting season and many
birds are building themselves a new home. Not to mention, the fungi, lichen,
and insects have begun to proliferate, which makes the site dynamic and always
interesting to observe. In addition to the significant changes in the
environment, my identification skills have exponentially grown. I am now able
to appreciate many of the intricate interactions that occur at my site!