Date: 10/20/2019

Number: 4500

At the Hilton Convention Center in Rockwall, Tx, October 20th, around 11 am I noticed Monarchs streaming by the windows and went out to watch them. They appeared to be hugging the shoreline of Lake Ray Hubbard and were coming by in large numbers. I made several separate one minute counts of Monarchs passing in front of me, and those 4 counts averaged out to around 50 Monarchs per minute. This density seemed to persist for at least one and a half hours. It might have started earlier and gone later. Only a few were stopping to nectar, mostly engaging in gliding flight towards the South. Some flew quite high, and others low.

Rockwall, TX

Latitude: 32.9 Longitude: -96.5

Observed by: Carol
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