Experts have noted that with the increase of malaria, sparrows are now flying farther afield to search for leaves of a tree known for its high concentrations of naturally occurring quinine, which is an antimalarial medicine.
तज्ज्ञांच्या निरीक्षणानुसार मलेरियाचा प्रतिरोध करणाऱ्‍या क्वीनाईन या घटकाचे अधिक प्रमाण असलेल्या एका झाडाची पाने या चिमण्या खातात.