passerines 2 mockers to invaders. vocal prowess biotic invasion
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Passerines 2
Mockers to Invaders
Vocal Prowess
Biotic Invasion
Superb Coloration
Cedar Waxwing tail tips, normally yellow, can be partly orange (as seen here) owing to the incorporation into developing tail feathers of rhodoxanthin, a red pigment found in Tartarian Honeysuckle berries that waxwings frequently consume during molt. This adult must have increasingly fed on honeysuckle berries as the molt of its tail proceeded from central tail feathers to outer ones. Note also waxy tips to wing feathers (secondaries), which give the species its name.
Wax-like wing tips are feathers with fused terminal barbs
Spectactular Migration
Kimura et al. 2002. Molecular Ecology 11:1605-1616
Paxton et al. 2007. Auk 124:162-175
Diversity of Blackbirds
Orians and Angell 1985 Blackbirds of the Americas. U. W. Press
Interspecific Territoriality
Variety of Nesting Dispersions
Irruptive Movements
Biotic Homogenization
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