American representative of this primarily Palearctic family. Bushtit, Psaltriparus minimus Leaf warblers Order: PasseriformesFamily: Phylloscopidae Leaf warblers are a family of small insectivorous birds found mostly in Eurasia and ranging into Wallacea and Africa. The Arctic warbler breeds east into Alaska. The species are of various sizes, often green-plumaged above and yellow below, or more subdued with greyish-green to greyish-brown colours. Yellow-browed warbler, Phylloscopus inornatus (A) Arctic warbler, Phylloscopus borealis (A) Kamchatka leaf warbler, Phylloscopus examinandus (A) Kinglets Order: PasseriformesFamily: Regulidae The kinglets are a small family of birds which resemble the titmice. They are very small, insectivorous birds. The adults have coloured crowns, giving rise to their name. Ruby-crowned kinglet, Corthylio calendula Golden-crowned kinglet, Regulus satrapa Waxwings Order: PasseriformesFamily: Bombycillidae The waxwings are a group of birds with soft silky plumage and unique red tips to some of the wing feathers. In the Bohemian and cedar waxwings, these tips look like sealing wax and give the group its name. These are arboreal birds of northern forests. They live on insects in the summer and berries in winter. Bohemian waxwing, Bombycilla garrulus Cedar waxwing, Bombycilla cedrorum Silky-flycatchers Order: PasseriformesFamily: Ptiliogonatidae The silky flycatchers are a small family of passerine birds which occur mainly in Central America. They are related to waxwings and most species have small crests. Phainopepla, Phainopepla nitens (A) Nuthatches Order: PasseriformesFamily: Sittidae Nuthatches are small woodland birds. They have the unusual ability to climb down trees head first, unlike other birds, which can only go upwards. Nuthatches have large heads, short tails, and powerful bills and feet. Red-breasted nuthatch, Sitta canadensis White-breasted nuthatch, Sitta carolinensis Pygmy nuthatch, Sitta pygmaea Treecreepers Order: PasseriformesFamily: Certhiidae Treecreepers are small woodland birds, brown above and white below. They have thin, down-pointed, curved bills, which they use to extricate insects from bark. They have stiff tail feathers, like woodpeckers, which they use to support themselves vertically on trees. Brown creeper, Certhia americana Gnatcatchers Order: PasseriformesFamily: Polioptilidae These dainty birds resemble Old World warblers in their structure and habits, moving restlessly through the foliage seeking insects. The gnatcatchers are mainly soft bluish grey in colour and have the typical insectivore's long, sharp bill. Many species have distinctive black head patterns (especially males) and long, regularly cocked, black-and-white tails. Blue-grey gnatcatcher, Polioptila caerulea Wrens Order: PasseriformesFamily: Troglodytidae Wrens are small and inconspicuous birds, except for their loud songs. They have short wings and thin