Sharp shinned hawk (Immature)

Being the smallest hawk in North America, Males are 23 to 30 cm (9.1 to 12 in) long, have a wingspan of 42 to 58 cm (17 to 23 in) and weigh from 82–115 g (2.9–4.1 oz). As common in Accipiter hawks, females are distinctly larger in size, with an average size advantage of 30%, and a weight advantage of more than 50% being common. The female measures 29 to 37 cm (11 to 15 in) in length, has a wingspan of 58 to 68 cm (23 to 27 in) and weighs 150 to 219 g (5.3 to 7.7 oz). The wings measure 14.1–22.9 cm (5.6–9.0 in) each, the tail is 12–19 cm (4.7–7.5 in) long and the tarsus is 4.5–5.9 cm (1.8–2.3 in).
Juveniles have dark brownish upperparts with each feather edged rufous, giving a rather scaly appearance. The brown head is streaked whitish, and the whitish underparts are extensively streaked brown.