Hummingbird Figure 4 - by Donna Dittmann - LOSNews 188 Nov.1999

Figure 4. Immature females. (left to right) Calliope, Costa's, Ruby-throated, Black-chinned, and Anna's. Note approximate size differences, position of wing relative to tail tip, length of bill, size of first (inner) four primaries versus outer six primaries, and shape/curvature of tip of primaries nine and ten (outer two).

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