page_title: North Yamaska River
section_title: Birdwatching census
hierarchical_section_title: North Yamaska River / Biodiversity / Birdwatching census
caption_attribution_description: English: Great Blue Heron at lac Boivin in Granby, Quebec
context_page_description: The North Yamaska river is a tributary of the Yamaska river. It flows over 47.8 kilometres on the south shore of the Saint Lawrence river in Quebec, Canada and passes through five municipalities, some of them sourcing their fresh water from it.
  Like the rest of the Yamaska, it is an important source of life, though urban development, agriculture and industrial uses have had a negative impact on the ecosystem depending on its waters since the colonization of the Eastern Townships.
  An awakening in regards to pollution in the North Yamaska has led to an increasing amount of movements such as collective art and eco-friendly action around the river; efforts are noted in local municipalities and their regional county municipalities to alter the impacts of towns and villages on water quality.
context_section_description: Inventories of birds living in Quebec are conducted by ÉPOQ (Étude des populations d'oiseaux du Québec (translates to: study of bird populations of Quebec)); the North Yamaska river being very important for birds because of the vast swamps surrounding Boivin lake and the Yamaska National Park, an interest is given to it and allows for a good source of data based on the observations of the COOHY (Club d'Observateurs d'Oiseaux de la Haute-Yamaska (English: Haute-Yamaska birdwatching club)).
  A myriad of species reside there year-round, though a large part migrates southwards in the autumn, only to return in the spring. The presence of the watercourse means that many aquatic species thrive there; among these, some of the most impressive and common are the great blue heron, the double-crested cormorant, and the Canada goose. Water often means insects will gather in large amounts, many birds live by the waterside for its abundance of food.
caption: Great Blue Heron in the wetlands surrounding lac Boivin.
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