appearance. Their food is insects and seeds. Horned lark, Eremophila alpestris Swallows Order: PasseriformesFamily: Hirundinidae The family Hirundinidae is adapted to aerial feeding. They have a slender streamlined body, long pointed wings and a short bill with a wide gape. The feet are adapted to perching rather than walking, and the front toes are partially joined at the base. Bank swallow, Riparia riparia Tree swallow, Tachycineta bicolor Violet-green swallow, Tachycineta thalassina Northern rough-winged swallow, Stelgidopteryx serripennis Purple martin, Progne subis Barn swallow, Hirundo rustica Cliff swallow, Petrochelidon pyrrhonota Cave swallow, Petrochelidon fulva Long-tailed tits Order: PasseriformesFamily: Aegithalidae Long-tailed tits are a group of small passerine birds with medium to long tails. They make woven bag nests in trees. Most eat a mixed diet which includes insects. Bushtit, Psaltriparus minimus 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 colored crowns, giving rise to their names. Ruby-crowned kinglet, Corthylio calendula Golden-crowned kinglet, Regulus satrapa Waxwings Order: PasseriformesFamily: Bombycillidae The waxwings are a group of passerine 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 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, although the range of this one species extends to central California. They are related to waxwings and like that group, have soft silky plumage, usually gray or pale yellow. They have small crests. Phainopepla, Phainopepla nitens 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 big 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 pointed down-curved bills, which they use to extricate insects from bark. They have stiff tail feathers, like woodpeckers, which they use to support themselves on vertical trees. Brown creeper, Certhia americana Gnatcatchers Order: PasseriformesFamily: Polioptilidae These dainty birds resemble