. ▁As ▁its ▁name ▁implies ▁the ▁col la red ▁sp arrow h awk ▁is ▁a ▁special ist ▁in ▁hunting ▁small ▁birds . ▁It ▁is ▁character ised ▁by ▁its ▁slight ▁brow ▁rid ges ▁and ▁sl ender ▁feet . ▁The ▁last ▁segment ▁of ▁their ▁middle ▁toe ▁projects ▁beyond ▁the ▁cla ws ▁of ▁the ▁other ▁to es . ▁ ▁Description ▁ ▁The ▁col la red ▁sp arrow h awk ▁is ▁ 2 9 – 3 8   cm ▁( tail ▁about ▁half ▁), ▁with ▁a ▁wings pan ▁ 5 5 – 7 8   cm , ▁the ▁average ▁male ▁we igh s ▁ 1 2 6 g , ▁female ▁ 2 1 8 g . ▁They ▁are ▁small , ▁fier ce , ▁fin ely ▁built ▁with ▁rounded ▁wings , ▁long ▁square ▁tail , ▁yellow ▁eyes ▁and ▁long ▁legs . ▁ ▁Ad ult s ▁have ▁sl ate - gre y ▁upper ▁parts , ▁sometimes ▁with ▁a ▁brown ▁was h , ▁and ▁a ▁ch est nut ▁half ▁col lar . ▁The ▁under parts ▁are ▁fin ely ▁bar red ▁r uf ous ▁and ▁white . ▁The ▁under ▁wing ▁and ▁tail ▁are ▁fin ely ▁bar red . ▁The ▁c ere ▁is ▁cre am ▁to ▁o live - yellow , ▁the ▁eyes ▁yellow ▁and ▁the ▁legs ▁and ▁feet ▁yellow . ▁The ▁sex es ▁are ▁similar ▁in ▁appearance ▁but ▁males ▁are ▁smaller ▁than ▁females . ▁Ju ven iles ▁have ▁brown ▁upper ▁parts , ▁with ▁pale ▁stre aks ▁on ▁the ▁head ▁and ▁na pe , ▁and ▁fine ▁r uf ous ▁edges ▁to ▁the