The magazine Natural History describes a series of experiments carried out in Colorado, North America. Common muscoid flies, which resemble houseflies, were dusted with bright colors so that they could be tracked easily.
प्राकृतिक इतिहास (अंग्रेज़ी) पत्रिका कोलोराडो, उत्तर अमरीका में किए गए परीक्षण की श्रंखला का वर्णन करती है ।