Monarch interacts (flutter fight) with queen over a portion of a large whorled milkweed patch along the Rio Grande. Such interactions are often observed as queens are the common large butterflies using milkweed habitats. Less commonly, monarchs interact with viceroys which use the coyote willow tall shrub stands that have become established along the Rio Grande bank. I have not observed viceroys using milkweed as a nectaring source, encounters with monarchs appear likely due to habitat proximity.
Las Cruces, NM
Latitude: 32.3 Longitude: -106.8
Observed by: James
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