|
Overlooking Lake Superior first thing in the morning |
As the weather starts to change, migration starts. Here in Minnesota is one of the top raptor migration sites in North America - Hawk Ridge (
hawkridge.org). Due to several factors, thousands of raptors pass over this ridge on the way south due each year. The first factor is the numerous thermals that are formed on a nice sunny day. This allows the raptors to soar and glide south rather than flap the whole way. The second factor is Lake Superior. Birds of prey generally won't fly over large bodies of water. These, along with a few other factors, funnel a large number of birds from Canada over this single ridge.
|
First year Sharp-shinned Hawk |
The key to Hawk Ridge is weather. If the weather is rainy, you might as well stay home since the birds are not going to be moving. On nice sunny days, you get a respectable number of birds migrating though. The best weather for raptor migration is the first sunny day following a couple rainy days. On those days, you can see tens of thousands.
|
Broad-winged Hawk |
Today was a good day to be at hawk ridge. After a few showers early in the morning, the clouds started to break up and thermals started to form. We started our raptor watch with a tour of the banding station. While we were there, they caught and banded 3 Sharp-shinned Hawks. Others, narrowly escaped the net. It was a treat to see all the action. Many of the birds they band are first years. They are still figuring out how to hunt and therefore tend to be a bit hungry. Because of this, they are more likely to be attracted to the lure used to bring them down to the net.
When we returned to the top of the ridge, the action in the sky was just getting underway. In the hour and a half or so that we were there we probably saw several hundred raptors. Our species included: American Kestrel, Broad-winged Hawk, Sharp-shinned Hawk, Bald Eagle, Red-tailed Hawk and a Turkey Vulture.
Not a bad morning!