Lawrence’s goldfinch (Spinus lawrencei) is a small songbird of erratic distribution that breeds in California and Baja California and winters in the southwestern United States and northern Mexico.

At about 4.75 in (12.1 cm) long and weighing about 0.4 oz (11 g), it is slightly bigger than the lesser goldfinch and slightly smaller than the American goldfinch, with less yellow in the plumage than either. Adults of both sexes are gray with pink to grayish flesh-color bills, stubbier than other goldfinches’. They have yellow rumps and paired yellowish wing-bars, as well as yellow edges on the flight feathers and yellow on the breast. The tail is black, crossed by a white band. Plumage is duller in winter, brightening after a spring molt. Males are paler, with black caps and faces and larger areas of brighter yellow. Females are browner, have less and duller yellow, and lack the black. Juveniles resemble females but are even duller and have faint streaks on the upperparts and especially the underparts.

Calls include “a nasal too-err, also a sharp, high PIti and Itititi“. The flight call, which is diagnostic, is given as “a high, clear ti-too” or tink-ul “reminiscent of glass wind-chimes”. The song is high-pitched, continuous, and limited in frequency range, including wind-chime notes and especially imitations of other species’ calls and other simple and distinctive sounds. Males sing in winter but mostly in the breeding season. Females sing occasionally and briefly.

Ref: Lawrence’s Goldfinch Information