Where do they go?

Friday, February 2, 2018

Where do robins go in the winter? Cardinals? Ducks? Why do birds migrate anyway?

pixabay.com

Believe it or not, many of the birds that migrate to warmer climates do so because of the food supply and not because of the temperature. Some robins stay home in Michigan, for instance, while others hit the road in the fall. In the spring they all find the way back to their homelands because bugs and seeds are abundant once again. 

Aren’t migratory instincts interesting? Some butterflies travel 3000 miles — which is mind-boggling since they are so tiny.

lerner.org

I’ve noticed quite a few Canada geese in Lexington this winter which I thought was unusual. Come to find out, Kentucky is considered a year-round home for them. I guess I’ve never thought about it before. 

seagrant.wisc.edu

But why don’t their little feet freeze off in icy pond water in the winter? It has to do with the proximity of warm arterial blood coming from their hearts to the cold venous blood returning from their feet. Apparently the venous and arterial vessels are close enough together for heat to move between them. For a more in depth description, click here: 

Why duck feet don’t freeze in icy ponds.

Getting back to migration, I’m glad cardinals stay around in the winter months. They are so beautiful — especially with a snowy backdrop. 

LORD, when I consider animal migration I’m amazed that you gave them the innate desire and ability to travel monumental distances for their own preservation. And to think that you are aware of the fall of even one single sparrow (Mt 10:29). How much more are you concerned about us who are made in your image?! Thank you, Lord.