The caterpillars/ chrysalis came from a neighbours yard. She found wasps were eating the young caterpillars. I received the caterpillars since she had to leave for a few weeks. The interesting observation was the length of time the eclosed butterfly was with us before leaving compared with summer monarchs. This was one took 20 hours and had to be encouraged to leave. A previous one which emerged a week earlier stayed for 28 hours due to rainy and windy weather. In comparison the summer monarchs in our yard were drying wings for 3-5 hours. For the most part the late chrysalis were in an outdoor enclosure but were sometimes brought in at night (due to the cold) which might have been an error.