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Posts Tagged "hormones"

Northern Cardinal (Cardinalis cardinalis) by Twan Leenders

Posted on Feb 3, 2014

Northern Cardinal (Cardinalis cardinalis) by Twan Leenders

It’s happening, no matter what the groundhogs say: spring is coming and the Northern Cardinals are among the first to celebrate. Snow, rain or frigid temperatures don’t matter – only the increasing daylight triggers hormonal changes in male Cardinals and usually around the last week of January their cheery song starts to warm our hearts. I heard my first Cardinal on January 31. If you haven’t heard one yet, I hope you will soon. The countdown to spring has begun!

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