Description
The warbler's upper body is predominantly black with white areas while its underparts are white with black streaks. Other identifying characteristics are dark brown eyes, white patches on its ears and neck, an incomplete white eyering, a white eyestripe, and two white spots on its outer tail feathers. Characteristic of Antillean warblers (S. adelaidae, S. delicata, S. plumbea and S. pharetra), the species features a long bill and short, round wings (53.8 mm/2.12 in average). Among Setophaga spp., only S. adelaidae has a shorter wing length average (50 mm/2.0 in) than the Elfin Woods Warbler. Juveniles differ from adults, retaining a greyish-green back for approximately a year and partially moulting from July to October. The warbler's average mature length is 12.5 cm (4.9 in) and its average weight is 8.4 g (0.30 oz). Sexual dimorphism is not present in this species.
Read more about this topic: Elfin-woods Warbler
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