1) Crake 2) Crex crex 3) Land rail 1) Landrail 
• (n.) A bird (Crex crex or C. pratensis) which frequents grain fields; the European crake or land rail; -- called also corn bird.
Corn'crake` noun (Zoology) A bird ( Crex crex or C. pratensis ) which frequents grain fields; the European crake or land rail; -- called also corn bird . 
The Corncrake or landrail (Crex pratensis) is a species of bird of the order Grallae of the family Rallidae. It is a wading bird, reddish-brown in colour and feeds on worms and insects. It is about the size of a partridge, and spends much of its time on the ground hunting for insects and worms. It nests in high grass or corn and at nightfall utters...
[n] - common Eurasian rail that frequents grain fields
land rail noun common Eurasian rail that frequents grain fields
Bird Crex crex of the rail family Rallidae, order Gruiformes. About 25 cm/10 in long, the bill and tail are short, the legs long and powerful, and the toes have sharp claws. It is drably coloured, shy, and has a persistent rasping call. The corncrake can swim and run easily, but its flight is heavy. It lives in meadows and cr...