174 BUTTERFLIES 



winter shelter. Apparently they fly about for a few days 

 after coming from the chrysalis and then retire to cool 

 woods, where under the side of a log or beneath the loose 

 bark of a dead tree they settle down and to all appearances 

 go to sleep. The instinct to remain quiet is very strong in 

 these butterflies. In taking the accompanying photo- 

 graphs, I found that even shortly after coming from the 

 chrysalis the butterflies when disturbed would fold their 

 wings with the antennae between them, and drawing the 

 legs against the body would lie quietly on their sides for a 

 long time. These same butterflies would also hang down- 

 ward from a limb by the horn- in the hibernating position as 

 shown in plate opposite page 32. 



In the cooler weather of early autumn, the butterflies 

 come from their retreats and fly about in the sunshine. 

 They are especially likely to be seen along the borders of 

 woods or in open glades. At this time they love the sun- 

 shine, and will settle in a sunny place to bask in it. 



Going into Winter Quarters 



When the warm days no longer tempt them abroad, the 

 Mourning-cloaks seek shelter in many sorts of situations — 

 under loose bark, in hollow trees, under culverts and 

 bridges, in woodpiles, in crevices of rocks, or alongside 

 logs lying on the ground. In such retreats they remain 

 until the sunshine of spring again calls them forth. 



Prof. G. H. Parker's observations indicate that 

 these butterflies are very sensitive to changes of tempera- 

 ture, and he has seen the interesting action of the butter- 

 flies crawling into their hiding places, finding that this 

 takes place each day after they had been sunning them- 

 selves. Thus he writes: 



