The species of brooding birds occurring in the Danube Delta were classified into 12 main biotopes, the classification criterion being represented by the nesting place where they show the greatest relative density.

As to their dynamics, the brooding birds include: 44 sedentary species and 132 migratory ones. The great number of migratory species is explained by the optimal conditions of nesting and especially of feeding the deltaic biotopes are providing in the warm season of the year. This phenomenon is also supported by the presence – in different deltaic biotopes as against the common ones – of some species, which in the rest of their area cover other life environments.

My daughter, Alissia Mei Si (pronounced "Ah-leeshya May See"), two and a half months old

The Little Susitna River near Palmer Alaska buried in snow.

Taken at a park in Jackson, New Hampshire. Population 879.