What is the difference between nidicolous birds and nidifugous birds ?

The difference between nidicolous birds and nidifugous birds are:

Nidicolous birds

• Birds which hatch help-less, feather less, underdeveloped young ones.

Image Source: carolinabirds.org/Images5LG/Sparrow,_Eurasian_Tree_Laitche.jpg

• The young ones stay in the next for some time after hatching.
• Example: Sparrow, pigeon.

Nidifugous birds

• Birds which hatch well developed young ones.
• The young ones leave the nest immediately.
• Example: Chicken, duck.