Fig. 2 Immature male Rufous Hummingbirds. This is an example of how we fill-in our template. Six of our imm. male Rufous Hummingbirds from season 2000-2001 are reproduced here. Cross hatching indicates a solid rufous coloration, such as on rump, uppertail coverts, ear and superciliary. Circles indicate a more mottled appearance of rufous. Gorget pattern is illustrated. If the patch changes because of green discs, this is noted. Initial primary molt is colored in black (representing new feathers) and molt noted later in the season is represented by cross-hatching at a specific date. If wing molt is not initially determined, this is noted so we can look for this feature in the future (Spot II and Front Spot, "wing molt?"). Fortunately these birds were initially separable by the gorget pattern. Note similarity in gorget pattern between Menace and Not Menace. Except for stage of primary molt, these birds are similar enough that you would be tempted to consider only one bird is present. In fact, we suspected two birds were present, but could not confirm Not Menace until 1/10. Other features to help identify individuals are also noted. Allen's description includes some notes for timing of tail feather replacement.

Donna L. Dittmann

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