Showing posts with label Live. Show all posts
Showing posts with label Live. Show all posts

Friday, March 8, 2013

2 Ravens (or Crows) attack a squirrel and carry it away

When I left work two weeks ago, I saw my first robin pecking at the ground. Ah, "Spring is here" I thought. The temperatures were warming up and most of the snow had melted.

The next morning, I was home, drinking a cup of coffee and looking out at the early Saturday morning sun.

A squirrel was in a tree building a nest in a nearby tree. Yes I thought, indeed "Spring is here".

The nest was quite large, about 2 feet in diameter (I guess) and was located in the crock of two branches about 20 feet above the ground. The squirrel would run and jump to adjacent branches, nibble off a twig, and then insert it into the nest. Every so often, the squirrel entered the nest and appeared to push everything into place.


After I watched the squirrel jump off to another branch, a big black bird landed about a foot away from the nest. It stood there, cocking its head, looking at the nest. At first I thought it was a crow, but it looked awfully large. So, I decided it must be a Raven.

As the squirrel returned to the nest, the raven hopped away. But when the squirrel ran off to get another twig, the raven boldly hopped over to the nest and looked into it. Then the squirrel returned and the raven backed away.

I thought it was odd that the squirrel ignored the bird, but it must not have felt threatened.


When the squirrel left the nest again, a second raven landed on an adjacent branch. "Two against one", I thought. But the both birds just stood on the branches, watching the busy squirrel.

When the squirrel returned one more time, and entered the nest, the two ravens attacked. With open wings, they hopped onto the nest. The first raven grabbed the squirrel by the neck, and the second raven took the tail. Then they flew off together with the squirrel trying to get free. I watched them fly until they disappeared over the trees.

"Wow" I thought! I didn't know that crows or ravens would attack a living squirrel. I knew they were scavengers and would eat a dead carcass, but I didn't know that they would hunt in pairs and kill their prey.


I told this story to my mother-in-law who is 85 years old. She grew up on a farm and told me "Oh yes, they do attack animals". She said that when she was young, her mother told her to watch the chickens and chase away any birds that would land. But, as she was watching, a big crow (or raven perhaps), swooped down from the sky, grabbed a small chicken, and flew away with it. Just like that!

So now when I look out my window and see that unfinished nest, I think about the poor squirrel who was just trying to make a summer home for itself and live in harmony with all the wild creatures. I guess "Spring is really here"!

Read more:
I found a very similar story titled: Wild Bird Wednesday

Friday, August 17, 2012

Don't be afraid of a colonoscopy. Maybe my experience can put your mind at ease.

Two weeks ago, I had my first Colonoscopy. I should have had this performed years earlier, but I was too afraid of the procedure. Truthfully, I imagined great pain and was worried about the anesthesia. And what if they found something? I was sure that this was going to be the worst experience of my life.

But I was wrong. There was absolutely no pain and I was asleep during the entire procedure. Plus, the examination found nothing. No polyps or anything else.

I was afraid for no reason - except for fear itself.

The doctor recommended that I return in another 5 years. Since that is quite a while away, I know deep down that I will try to scare myself once again. So, I am documenting my colonoscopy experience for my future reference and to remind myself that there is nothing to be afraid of.

And perhaps that by reading about my experience, you will feel more comfortable with scheduling your own procedure.

Background
My wife has been urging me to have a colonoscopy for several years. A good friend of ours died because he had colon cancer that was undetected until it was too late. He never had an examination and refused to believe that anything like that would happen to him. After his death, most of his closest friends took action and underwent this procedure. The only holdout was me. I was too afraid.

Finally last spring, I promised that I would get examined. But, I kept putting calling a doctor. Then one day in early June, I called a specialist and scheduled an appointment - three weeks later.  I still had time to chicken out.

However, I kept the appointment. First I was screened by a nurse. After taking my blood pressure, she told me that it was high (150+). Great I thought, now I have this to worry about. A little later, I met with the Doctor who asked about my medical history and explained the procedure. Then he lead me to a "scheduler". She checked my insurance and said that I would have to go to the hospital because it was my approved facility. She asked if I would like to have this preformed within the next week? "No I thought to myself". So, we agreed on a date 5 weeks away. At least I was safe for a while.

The Preparation
The next 4 weeks passed quickly and I tried to ignore my upcoming procedure. But, I had to pick up a prescription for a cocktail mixture that would clean out my system. The Saturday before, I visited the pharmacy and they gave me a huge plastic container partially filled with powder. Since my procedure was scheduled for Friday, the pharmacist instructed me to fill the container with water and pour one of the flavor packs into the mixture. He suggested lemon/lime and that is what I used.

So on Wednesday night, I followed his instructions. I placed the container in the refrigerator and went to bed. At 2:00 PM on Thursday afternoon, I had to begin drinking a glass of the solution. One glass every half hour until it was all gone. With 64 ounces of liquid, I wasn't finished until 9:30 at night. In between, I kept running to the bathroom.  The solution was not as bad as friends had said. It was a bit salty but it had a lemon taste (I chugged it).

The Procedure.
The colonoscopy was scheduled at 1:00 PM on Friday. My wife took me to the hospital at 11:30 AM. After filling out paperwork, I was escorted to a holding area. I was told to undress, put a gown on, and lay down on a stretcher type bed. Then, a nurse took an EKG.

Ever since I entered the hospital, I could feel my heart racing. I wanted to run out and forget the whole thing. But, I didn't.

I imagined that the results of the EKG would indicate I was having a heart attack. Then what I wondered? Shortly thereafter, I found out. Another patient next to me was informed that he was being rushed to Intensive Care rather than have a colonoscopy. He had a problem with his heart.

Through this, the nurses said that my EKG was normal and not to worry. They then hooked up an IV that entered a vein on my hand. As I laid there, other patients were rolled out of the room for their procedure.

Now it was my turn. They rolled my bed down the hall into a dreary and cluttered room. Two nurses followed me in. They immediately hooked me up to monitors. Then, one asked: "Is that his blood pressure?"  I looked at the monitor and I saw 180 over something. God, how was I going to survive this?

The Doctor and an Anesthesiologist entered. They placed a needle into the IV and said I would be going to sleep soon. I remember putting down my head.

It's Over
The next thing I knew they were waking me up. I don't remember how, but I remember opening my eyes. Only the 2 nurses were there. They said that everything was fine and that no polyps were found.  I asked about my blood pressure. They laughed and said it was normal. During the entire procedure it was 120 over something. They told me that it was normal to experience high readings before the procedure but that my health was entirely fine.

I was rolled back to the original holding room and was told to relieve any air I felt. Don't worry they said, "It doesn't smell". I laid there for a half hour and listened to myself and others serenade the nurses with a variety of farty toots! It was kinda funny.

Next the doctor stopped by and re-iterated that my procedure went well and that I had no polyps or other complications. He said to schedule another in 5 more years and he was off to the next patient.

The nurses then gave me a buttered roll and a Coke. When I was finished eating, I got dressed and they led me out of the hospital to my waiting wife.

Summary
I couldn't believe it. After all that worry I learned that it was only my imagination that caused that fear. I didn't feel a thing and there was no pain afterward.

So, if you are like me and have been putting off having a colonoscopy because of fear, I can only say "Ignore the Fear". Sure, you may be anxious, but when you wake up afterward, you will be asking yourself: "What was I afraid of anyway?".



Friday, January 20, 2012

Use Bing's Webmaster Tools to reduce and slow down crawl rates

If you have a website and it is being crawled too often by Bing, Yahoo, or Live, this post describes how to reduce their crawl rate to acceptable levels. 

Last week, we began receiving 500 and 503 errors from one of our affiliate stores. This had the undesirable side effect of placing our local instance of Apache's web server in an error state and thus taking our site offline for several hours each day.

We realized that our site was down, but did not know why. After reading through our servers log files, we discovered the 5xx errors. After researching these http error codes, we found that we could not fix these errors directly. Instead, we had to correct the root cause.

Searching through our affiliate's website, we found that they will return these error codes when their server receives too many requests from a particular IP. So, we returned back to our log files and found that the Bing, Yahoo, and Live crawlers were simultaneously requesting many of our pages at the same time.

In order to fix our problem, we had to slow down these crawlers. Our first action was to add a crawl delay to our robots.txt file. Initially, we set this to 60 seconds.

Next, we discovered Bing Webmaster Tools.

In order to utilize this, we needed to sign in with our Windows LiveID. We did not have one so we created a new one. That was very easy and we were able to Sign In to that site within minutes.

Next,  we had to add our site to the crawler. The Bing Webmaster Home page has two sections. The first is for messages, and the second is for sites. We found the "Add Site" link and submitted our site's URL.

Unfortunately, it takes about 3 days before any statistics are displayed. So, we just waited.

Once we saw that Bing was crawling and indexing our pages, we were then able to reduce the crawl rate.

This was done by:
  • Signing into the Bing Webmaster Tools
  • Clicking on our site's URL listed in the Sites section.
  • That brought us to the Dashboard page.
  • At the top is a "Crawl" link, and we clicked on it.
  • The next page then provided a sub-menu.
  • We clicked on the "Crawl Settings" link and it brought us to a graphical "Crawl Rate" page.
  • We lowered our Crawl rate to Minimum (by highlighting the boxes for each hour of the day)
  • And lastly, we pressed the "Save" link.
Within 2 days, the Bing, Yahoo, and Live crawlers were behaving properly, and all of our HTTP 5xx errors disappeared.

During this process, we learned five important things about crawlers:
  1. The Google bot crawl rate is well behaved, and does not overwhelm your server
  2. The Google crawler ignores the "Crawl-delay" command in the robots.txt
  3. Bing only allows a maximum crawl-delay of 4 seconds
  4. Once your site becomes large enough, the crawling bots can harm your site
  5. Crawlers are tamable.
Note: To set a crawl delay in your robots.txt file, enter the two lines:

User-Agent: *
Crawl-delay: 4


at the top of the file.

Even if you are not experiencing problems with your website, we suggest that you submit your site to  Bing Webmaster Tools. Although the interface is slow, it provides a wide variety of information about your website which is a great complement to the Google Webmaster Tools.
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