Help Needed Identifying Corvids
1. Carrion crow (Corvus corone)


The plumage of carrion crow is black with a green or purple sheen, much greener than the gloss of the rook. The bill, legs and feet are also black. It can be distinguished from the common raven by its size (48–52 cm or 19 to 20 inches in length as compared to an average of 63 centimetres (25 inches) for ravens) and from the hooded crow by its black plumage

3. Hooded crow (Corvus cornix)


ashy grey bird with black head, throat, wings, tail, and thigh feathers, as well as a black bill, eyes, and feet.

2. This one is a bit more difficult, but I think it is also a hooded crow or possibly a hybrid  Carrion crow × Hooded crow (Corvus corone × Corvus cornix).

 Hybrid  
At first glance, #2 looked somewhat like a Western jackdaw (Corvus monedula) because the grey feathers travel fairly high up on its neck and because the bird appears to be somewhat smaller.

Measuring 34–39 centimetres (13–15 in) in length, the western jackdaw is the second smallest member of the genus Corvus...The cheeks, nape and neck are light grey to greyish-silver, and the underparts are slate-grey. The legs are black, as is the short stout bill.

However, C. monedula has fairly conspicuous grey eyes and its feathers travel up the neck/head almost as far superiorly/anteriorly as the eyes. Neither appear to be the case in your specimen.

All three species are common in Europe.