Migration has always been a gamble for birds. Birds' long, arduous journeys have always been of great effort and risk. Several natural factors affect bird migration, determining whether and when to leave their breeding places for their wintering locations.
Natural Factors to decide when to migrate are:
Daylight. Once the days start getting smaller - meaning with fewer hours of light - birds receive their first sign that it might be time to begin their journey.
Temperature. The gradual - if not abrupt - decrease in temperatures is another indicator for birds.
Food. Food sources may gradually become less available ... Ler mais
Corvo Island is one of the nine Portuguese islands of the Azores, in the Atlantic Ocean, with the particularity of being the one situated the furthest west of the mainland. This means that this small piece of land is the westernmost place in the Western Palearctic Region. Why is this so important in terms of birdwatching? Let’s see.
The geographic location of Corvo Island is in the middle of the Atlantic Ocean between the North American and Europe Continents.
As you can see above, there are four main bird migratory routes worldwide. Basically, one is in the Americas, another ... Ler mais
This month's interview is with a Birdwatcher. B Journal Editions spoke with Gonçalo Elias, an author and certified professional trainer that has dedicated his life to observing and studying wild birds. Gonçalo is one of the most active people in Portugal in the study of wild birds and in promoting and sharing knowledge and information with the community. He is then, the founder and manager of the website Aves de Portugal, has contributed to eight ornithological atlases, and has published more than 20 books about birds and the best locations to observe them in several different locations in Portugal.
How ... Ler mais