Give birth to a branch to show rust in those days brown or rufous .
当年生枝呈锈褐色或红褐色。
He used a 300mm lens to take this unusual photo of a rufous hummingbird collecting fibers from a cattail-presumably to build a nest .
他用300毫米的镜头拍下了这个红褐色蜂鸟从香蒲上采集纤维,可能是用以筑巢之用,的照片。
Many birds are solid rufous above and sullied yellow below , with little contrast anywhere .
许多个体体上很确定是赤褐色的,体下是黄色,很少有对比。
Leaf blade obovate or obovate-elliptic , abaxial surface with rufous brown indumentum .
倒卵形的叶片或倒卵形省略,背面具棕色。
The tiny rufous hummingbird is able to recall where and when it last dined on the sweet nectar of flowers , according to new research , proving bird brains are smarter than first thought .