In the spring, my bird feeders were over run by brown headed cowbirds. Their numbers diminished as the season progressed, but there were always some to be seen.
A few days ago I found a dead cowbird under my deck. It did not have any visable trauma. I threw it in the woods figuring it must have hit a window and broke it's neck. However, about a 1/2 hour later I saw a cowbird on my feeder that did not seem right. He did not fly from my approach and studied me oddly as I looked at him. He eventually did fly and did not seem impaired.
Later, my son and I were in the yard and he remained on the feeder watching us, he did not care how close we came to the feeder.
the next moring he was still there. This morning I went into the backyard and he was on the ground. As I got within 15 feet of him, he flew off. Tonight just before dark I found him dead in the yard. Again there was no sign of trauma. I put him in the woods as well.
I was concerned and looked into brown headed cowbird disease. They are actually known for being very resistant to disease (a trait developed from their parasitic nature) but are major carriers of West Nile virus and Sarcocystis Neurona (a disease mostly affecting horses). It is hard to determine but it appears that sometimes these diseases are fatal for the birds, but they are mostly just carriers.
I am wondering if I should be concerned. There are lots of mosquitos about and I wonder if I should bag that last bird to have him tested. Unfortunitely the insects already started on him.
Any thoughts, or additional info on this would be great thanks,
Jeff
A few days ago I found a dead cowbird under my deck. It did not have any visable trauma. I threw it in the woods figuring it must have hit a window and broke it's neck. However, about a 1/2 hour later I saw a cowbird on my feeder that did not seem right. He did not fly from my approach and studied me oddly as I looked at him. He eventually did fly and did not seem impaired.
Later, my son and I were in the yard and he remained on the feeder watching us, he did not care how close we came to the feeder.
the next moring he was still there. This morning I went into the backyard and he was on the ground. As I got within 15 feet of him, he flew off. Tonight just before dark I found him dead in the yard. Again there was no sign of trauma. I put him in the woods as well.
I was concerned and looked into brown headed cowbird disease. They are actually known for being very resistant to disease (a trait developed from their parasitic nature) but are major carriers of West Nile virus and Sarcocystis Neurona (a disease mostly affecting horses). It is hard to determine but it appears that sometimes these diseases are fatal for the birds, but they are mostly just carriers.
I am wondering if I should be concerned. There are lots of mosquitos about and I wonder if I should bag that last bird to have him tested. Unfortunitely the insects already started on him.
Any thoughts, or additional info on this would be great thanks,
Jeff