Mobile bird identification
Bird Field Guide
Adult Male

Note the striking white wing bars, (especially visible in flight), the blue-grey head and the pink underside. You can also just see the white outer tail feathers of the black tail.

Chaffinch

Fringilla coelebs
Thanks to: www.flickr.com/people/foxypar4/ (Modified)
Finches Menu
Thanks to:http://commons.wikimedia.org/wiki/User:Nilfanion (Modified)
Other Finches
Chaffinch
Blue-grey head
White wing patches
Pink underside
Brown back
Dark wings
Brambling
Mottled head
Orange breast
Dark spots on flank
White rump
Dark back and wings
Linnet
Pale grey head
Pink breast
Orange-brown back
Pale red forehead
Dark wings
Twite
Black streaked breast
Tawny-buff face
Streaked brown back
Pink rump
Dark wings
Redpoll
Pink breast
Pink forehead
Small bill
Brown streaked body
Whitish streaked underside
Goldfinch
Red face
Black and white head
Bright yellow on wings
Tawny brown back
Pale underside
Greenfinch
Green-yellow body
Stout bill
Yellow wing bar
Large heavy finch
Dark around eye
Black cap
Yellow head and breast
Black and yellow wings
Yellow wings
White underside
Siskin
Bright yellow forehead
Yellow breast
Green and black wings
Forked tail
Female brownish
Serin (Rare)
Chaffinch
Brambling
Linnet
Twite
Redpoll
Goldfinch
Greenfinch
Siskin
Serin
Bullfinch
Crossbill
Hawfinch
Black cap, bill and nape
Bright red underside
Grey back
Black wings
White rump
Bullfinch
Large heavy bill
Bright brown head
Brown body
Black wings
Whitish wing bar
Hawfinch
Hooked, crossed bill
Red or green body
Dark wings
Dark eye
Habitat specific
Crossbill
Key identification points of a Chaffinch
Chaffinch in flight
Adult Female
Key identification points of a Chaffinch
Female Chaffinch
Blue-grey head
Brown back
White wing bars
Pinkish underside
Black tail with white outer feathers
This image shows the much duller plumage of the female, however the white wing bars and white outer tail feathers are still present in the female.
Brambling or Chaffinch?
Chaffinch in flight
Brambling in flight
Chaffinch (left), Brambling (right):

Brambling frequently flock with the more common Chaffinch in winter, the Brambling can be identified by it's distinctive white rump with dark head and back in flight.
Distribution:
One of Europes most common breeding birds, a summer visitor to Northern Europe and resident elsewhere. UK numbers are increased by wintering birds.
Habitat:
A bird of farmland, hedges and woods, often seen in large flocks feeding around farms in winter.
Notes:
The male and female birds are different, the female being much duller but still showing her distinctive wing and tail pattern when in flight. The birds ability to take advantage of almost any available food source and habitat makes the Chaffinch one of the most widespread breeding birds in the UK. The Chaffinch is closely related to the less common Brambling and in winter they often flock together, feeding mostly on seeds and grain, often around agricultural buildings.
Order: Passeriformes

Family: Fringilladae

Genus: Fringilla

Species: F. coelebs