EUROPEAN PROJECT OF AMPHIBIAN AND AQUATIC REPTILES' HABITAT RECOVERING IN LOW TER WETLANDS

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the 99-04 LIFE:
Ter Vell - Pletera

 

THE ANIMALS

Technical card:

Common name: Bittern
Scientific name: Botaurus stellaris
Family: Ardeides
 

Description
Big aquatic bird unmistakable with any other species. Plumage subtly mottled in various shades of brown, which help it to blend with the reed stalks amongst which it lives. Compact structure with a heavy neck, it has robust legs that hang during flight and a big bill.

Diet
Bitterns mainly feed on fish, especially eels, amphibians and invertebrates. It can also feed on worms, molluscs, crustaceans, spiders, small lizards, small birds and small mammals.
 
 
Habits
Crepuscular bird that during the day remains hidden between the reeds thanks to its camouflage; when startled it adopts a camouflage posture, bill pointing upwards and neck stretched vertically. Its loud booming call, that reminds us o His stop and fort shout nocturnal has created many legends.

Reproduction
In spite of having little data on its reproduction, we know that eggs (up to 6) are laid between April and May.


Habitat and distribution
They breed in swamps dominated by reed mace or common bulrush, avoiding sectors with acid or contaminated waters or those with trees and shrubs. In Catalonia they select environments where reed predominates and specially those with free waters.
Nesting bird in all the Palaearctic. Good part of the population is resident, although those that live in higher latitudes show a migratory nature, as it is confirmed by observations during migration periods and by the arrival of over-winterers to southern areas.


Threats
Habitat loss and degradation. Drought in humid areas, legal hunting and nocturnal hunting in humid areas and the laying of electrical cables are other threats.