A French team conducted experiments using sparrow chicks and
write in Environmental Research that their tests led to slower growth, with females impacted most.
They targeted the common fungicide tebuconazole, popular on food crops because it can stop everything from necrotic ring spot to blights, mildews, and smuts. They compare it to the popular weedkiller glyphosate, which they claim has caused a decline in birds in Europe, despite scientists showing the top reason for bird population changes in various areas has been land use changes and not the use of pesticides lacking an Organic™ label.