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Birds

close up photo of insect hole on tree

Cantankerous cavities

Most cavities in a tree are caused by some type of living organism, either an animal or a pathogen of some sort. Some cavities will only be found in dead trees or a portion of a live tree with dead wood. Other cavities can be in otherwise completely healthy trees. Let’s take a look at some of the...
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flying geese over lake silhouetted against sunrise

Be vigilant about bird diseases

Anyone who comes into contact with birds should be aware that avian influenza cases are on the rise in Illinois and around the Midwest. What is avian flu? Avian influenza is a highly contagious virus that spreads naturally among wild birds, sometimes without causing illness. However, avian...
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crows roosting in tree tops at dusk with moon rising in background

Crows come home to roost

When I sat down to write this blog, I didn’t have a clear topic in my mind. So, I did what I usually do when I want to think and looked out my office window. Through this window, I can see just the tops of three oak trees which today were covered with crows. I counted more than two dozen with more...
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grackle bird perching on bird feed cage

Wild songbird illness still undiagnosed

The email came in sometime in May of this year. A colleague in Northern Illinois contacted me with a wild bird concern. A woman had found a dead bird in her yard for a second day in a row and was wondering if something was wrong that she had not heard about.  I gave the standard answer:...
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American Robin male bird

The robins have returned, but did they ever leave?

Spring has sprung! What nature-lover doesn't like to engage in a friendly little competition with their friends and family each year over who sees the first robin? Bird lovers often keep detailed notes year to year comparing when the first robin was seen and hypothesize why they were early or late...
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Cottontail rabbit babies in nest.

Wildlife Babies

Spring is the season of new beginnings. Wildlife baby season in Illinois starts as early as February when great horned owls lay their eggs and frogs begin to call. Coyote pups are born in March and soon a flurry of animals continue courting, mating, and preparing for what will...
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