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Event: Monarch Fall Roost Duration: 00 hours 30 minutes Number: 25
Date of Sighting: 10/07/2013 Latitude: 32.1306 Longitude: -97.8548
Town: Chalk Mountain State/Province: TX Country:
For night between Oct 7 and 8.

The number I entered is what I actually saw. Total is really much higher.

An hour or so before sunset I saw a few Monarchs already flying near trees that are typical roost sites. But most Monarchs were still on flowers at sunset. One-half hour after sunset none were obvious on flowers, but there was no obvious mass exodus either. I did find some perched in larger Live Oak and Ashe Juniper trees, but not enough to account for all that were feeding. I did not check every tree. I found a couple roosting individually on tall forbs.

Wind had gone calm at sunset and remained so until sunrise when it rose quickly.

So they all "roosted" if I define roosting broadly, as anything that does not involve flying, eating or reproducing, ignoring whether they aggregated.

The image shows a small roost still under a large Live Oak at 8:30 the next morning (Oct. 8). A few seconds after I took this picture they all flew off simultaneously.

 
User-submitted image
About the Observer
Name: Gregg L Teacher's Name:
City: Chalk Mountain   School:  
State/Province: TX   Grade:  
Country:      
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