Tiffany Granath Night Calls

A note on feeding behavior in passerines

is known that the energy used comes from the food birds ingested and the same is intended or used for different purposes:

• maintain body temperature (endothermy).


• maintain proper body structures.


• digestion.


• movement (diving, flying, etc ...).


• development and growth.

addition

unequal energy from food, it should be noted that the size of the bird plays an important role as regards the trophic requirements of the species in question. The larger the size of a bird, the greater the need for food, since metabolic activity is higher and maintenance of body structures requires it (for example, replacement of feathers). However, it is known that trophic requirements of the species descend in proportion to increase the size of the bird. This perfectly explains the constant search for food in winter by many passerines. Studies found that use about 90-95% of their time to the task of finding food.

The above described were clearly observed during these days in the marshes Txingudi. Titmice, chickadees, myths, robins, thrushes, blackbirds, finches, goldfinches, finches, Lugano, etc ... exclusively dedicated to food (Mainly seeds because a food is energetically very profitable).

Greetings.