鸟类学家们研究发现，在整个繁殖季节的过程中，雀蛋一产下就弃巢而去的行为提高了这些遗弃巢穴的山雀的产雏量。
They found that, over the course of the breeding season, deserting the nest once eggs had been laid boosted the number of descendants produced by the bird that fled.
为了使刚出生的雏鸭们认亲，初期的48小时十分关键，母鸭必须在场。在制作盔甲的过程中，重量问题十分关键。
For imprinting to occur in ducklings, it is critical a parent be present during the first 48 hours. The weight issue in armor construction was crucial.
研究饲粮中添加不同水平硫酸锰对笼养蛋雏鸭生产性能、营养物质利用率、血清生化指标以及组织矿物元素沉积的影响。
The experiment was conducted to study the performance, nutrient efficiency, blood serum biochemical traits and the mineral element in tissue of cage-rearing young ducks (one day).
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