Monitoring bird overwintering survival at the La Malinche National Park, Tlaxcala, Mexico.

Bird migration is one of the most fascinating life history characteristics of live, wild bird populations. Birds need to have food resources and breeding areas throughout the year; nonetheless, these are not always readily available. During the winter season, for instance, harsh weather conditions (very low temperatures) pose a real problem for several birds in places like Alaska, Canada and the United States of America (USA). These birds have a very hard time finding food under such weather conditions. Therefore, in order to obtain such resources, several bird taxa often decide to migrate in order to find areas with better (warmer) climates...

Read more »