Date: Sunday April 5
Time: 10:20 – 11:20 AM
Weather: Partly sunny
Temperature: 47 degrees
Location: Ravenna Park
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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.
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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.
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Figure 4, the fern that I could not identify |
Figure 5, the leaflets of that mythical fern
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Figure 6, a giant horsetail
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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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