An online resource based on the award-winning nature guide – maryholland505@gmail.com

Male Eastern Chipmunks Exploring Female Territories

Eastern Chipmunks breed twice a year, in March and in June.  If you’ve seen a chipmunk this spring, chances are it was a male, as males emerge several weeks before females.   When they first come above ground, males check out female territories.  When females appear they soon come into estrus, which lasts for roughly a week.  However, they are only receptive to males for about a seven-hour period during this week.  Outside of these seven hours, females will aggressively repel any advances.  When males sense that their timing is right, they indicate their interest and intention by waving their tail up and down.  This only occurs during the mating season – at all other times chipmunks only wave their tail horizontally back and forth!

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2 responses

  1. stmcardle

    I hope that was a male chipmunk Zolli got!

    >

    March 9, 2020 at 7:42 am

  2. Alice

    Haven’t seen any 🐿🐿 yet, interesting about the tail greeting! We did see 6 🦃🦃🦃🦃🦃🦃 this morning, males displaying.

    March 9, 2020 at 8:31 am

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