Inasmuch as there is at present no satisfactory method of eliminating the lead-poisoning hazard, 
it is possible only to suggest measures that should reduce waterfowl losses from this source. 
Increasing Natural Food Resources. -- The development of more extensive stands of certain 
natural foods is a possible remedial measure, fig. 18. As has been demonstrated in pen experiments, 
ALLEVIATING LEAD POISONING 
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the form of the food consumed, as well as the quantity, is important in survival of ducks suffering 
from this malady. 
Fig. 18. -- Stand of wild millet located on premises of a private duck-shooting club near Bath, Illinois. 
Such stands of natural foods are important in reducing the effects of ingested lead. 
Of the foods tried, the most desirable for alleviating lead poisoning were leafy, green, aquatic 
plants. Coontail was especially good. Next in value to leafy vegetation were small seeds, such as those © 
of millet, smartweed, and tame rice. Corn was the least beneficial. 
Through management it is possible to encourage the growth of those natural foods most likely to 
alleviate lead poisoning in ducks. By providing the proper depth and clarity of water, coontail or sago 
pondweed can often be increased in abundance. By reducing water levels to expose mud flats, beds of © 
millets, smartweeds, and other moist-soil plants can be developed; the beds must then be flooded to 
make the seeds available to ducks. | 
Dispersal of Ducks From Problem Areas. -- Known focal points for lead-poisoning outbreaks i| 
should be given particular attention. After the hunting season is over, it is often possible to prevent | 
large numbers of ducks from congregating on such areas by employing scare devices. 
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