利他的

Altricial birds require extensive parental care after hatching.
(Altricial鸟类在孵化后需要大量的亲代照顾。
The altricial chicks were placed in a nest made of leaves and twigs.
这些雏鸟被放在由叶子和树枝制成的巢中。
Unlike precocial birds, altricial chicks are born blind and helpless.
与早成鸟不同，雏鸟出生时是盲目的，没有能力的。
The altricial bird species spends most of its time being fed by its parents.
这种雏鸟大部分时间都在被父母喂养。
Researchers observed that the altricial bird required more warmth than other species.
研究人员观察到这种雏鸟比其他物种需要更多的温暖。
The altricial baby bird was found abandoned in a park by a concerned citizen.
一个关心的市民在公园里发现了一只被遗弃的雏鸟。
In order to survive, the altricial bird must stay close to its parent for protection.
为了生存，雏鸟必须紧贴着它的父母以获得保护。
The mother altricial bird spent hours each day feeding her chicks.
这只母雏鸟每天花几个小时喂养她的雏鸟。
Ecologists studying altricial birds noted their high dependency on parental care.
生态学家研究雏鸟时注意到它们对亲代照顾的高度依赖性。
The conservation efforts focused on protecting habitats for altricial bird species.
保护工作集中在保护雏鸟物种的栖息地。