The sparrowhawk we know is the American kestral......that hawk looks huge!!
Our kestral would be a third the size of what appears there to be a Wood Pigeon.
What hawks do they call ''sparrowhawks''?
I believe there are many species of Sparrowhawks, including the Kestrel.
Sparrowhawk (sometimes Sparrow Hawk) may refer to several species of small hawk in the genus Accipiter. These include:
    * Chestnut-flanked Sparrowhawk, A. castanilius
    * Collared Sparrowhawk, A. cirrocephalus
    * Eurasian Sparrowhawk, A. nisus
    * Imitator Sparrowhawk, A. imitator
    * Japanese Sparrowhawk, A. gularis
    * Levant Sparrowhawk, A. brevipes
    * Little Sparrowhawk, A. minullus
    * Madagascar Sparrowhawk, A. madagascariensis
    * New Britain Sparrowhawk, A. brachyurus
    * Nicobar Sparrowhawk, A. butleri
    * Ovampo Sparrowhawk, A. ovampensis
    * Red-thighed Sparrowhawk, A. erythropus
    * Rufous-chested Sparrowhawk, A. rufiventris
    * Rufous-necked Sparrowhawk, A. erythrauchen
    * Shikra, A. badius, also known as 'Indian Sparrowhawk'
    * Slaty-mantled Sparrowhawk, A. luteoschistaceus
    * Small Sparrowhawk, A. nanus
    * Vinous-breasted Sparrowhawk, A. rhodogaster
    * Frances's Sparrowhawk, Accipiter francesii, also known as Frances' Goshawk
          o Anjouan Island Sparrowhawk, or Ndzuwani Goshawk Accipiter francesii pusillus, an extremely rare, possibly extinct, subspecies of Frances's Sparrowhawk
    * American Kestrel, Falco sparverius, often incorrectly called a 'Sparrowhawk' or 'Sparrow Hawk'
    * Nankeen Kestrel, Falco cenchroides, may be called a 'Sparrowhawk' on Norfolk Island
FROM WIKI