Date: Sunday April 5
Time: 10:20 – 11:20 AM
Weather: Partly sunny
Temperature: 47 degrees
Location: Ravenna Park
Figure 1, my natural observation spot, an enormous
erratic rock
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Figure 2, what I could see by sitting on my natural spot
(50 square meters scale)
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I
feel like this homework is awesome! Today, as this course requires, my friends
and I went out to a natural area, which is the Ravenna Park. Located north to
UW campus, this park is pretty convenient for us. Even though we didn’t take
the short-cut, it only took us 15 minutes to get there. After going inside the
park, we walked by the Ravenna Creek along the trail, trying to find our
natural spots. I quickly found my spot, an enormous rock (someone told me it’s
an erratic rock left behind by receding glaciers). So, I climbed on the rock
and began my observation.
Song sparrow singing? I guess
Let me talk about animals
first. Sitting on this big rock and closing my eyes, I could hear at least five
different kinds of birds within my 50-square-meter scale. There were many song
sparrows, at least two spotted towhees,
lots of crows, some chickadees, and two bushtits. Even if I could hear their voice,
I couldn’t see most of them. Also, besides the songs and calls from those
birds, there were still others that I couldn’t identify. For example, I guessed
a successive and loud voice was from an American
robin. However, it was too different from its usual voice. After getting a
general idea about bird species, I took out of my binocular to track a song sparrow (I wanted to see its black
spot on its belly and listen to its song). It didn’t take me too long before I
found it. However, since it turned its back to me, I couldn’t see its black
spot. An excellent bird watcher once told me that the best way to identify a song sparrow is by its black spot.
Finally, the song sparrow turned its face to me and began to sing. I’m so glad
that I could not only see its black spot but also record its song. Before
today, I had a hard time memorizing song
sparrow’s song. Now, if I cannot remember what the tone is, I can simply
check my recorder. The tune starts with two high-pitched sounds and a lower one
next. Then, it starts to vibrate. What a beautiful song! Suddenly, I felt like some
scraps of tree barks was falling down. I looked upwards. Wow! There is an eastern gray squirrel climbing down the tree! I guessed it was trying to
find some food on the ground. This time, I took a wonderful picture of this
cute creature. I also took many pictures of birds. However, since birds always
perch very far from me, all of my pictures are pretty vague. So, I’m not going
to show them here.
Figure 3, a cute eastern
gray squirrel
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The second part of my observation
was about plants. I learned giant
horsetail, western sword fern, and so on. However, for many plant species, I simply couldn’t identify them.
For example, in my one-square-meter scale, there was a fern with greenish stalk
and bi-pinnate fronds. According to field guide, the only one in this area that has those
characteristics is bracken fern. So, I was guessing that it could be a bracken fern. However, the field guide also said that
bracken fern’s fronds divide
into three triangular, bi- or tri-pinnate leaflets. This part confused me a
lot. I didn't quite understand what the triangular leaflets are. Also, the picture in the field guide didn’t seem like what I saw in the
real world. So, I'm still not sure what kind of fern it is. I’m going to post some pictures about this fern and I need someone’s
help.
Figure 4, the fern that I could not identify |
Figure 5, the leaflets of that mythical fern
Figure 6, a giant horsetail
Figure 7, what is this?
This
is really a great experience! Being outside and spending time with nature that
we often overlook. It is not only a process to learn about those species around
me but also a process to slow down my life and listen to the voice of nature.
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