Understanding Bird Migration Pattern: Causes and Mechanisms

[1]. Responding to environmental changes, a variety of bird species have recently been displaced, leading to changed behavior. Migrant and sedentary birds show interpersonal survival differences in rates, population count, and lifetime of 180 individuals radio-tracked throughout, including partially displaced Great Bustards (Otis tarta), with 16 years of data for analysis. We utilized population migration patterns in this study, automating the step of screening ecological phenomena from radar data. This approach will significantly assist in conducting large-scale research. We employed Fisher on SIFT descriptors as the basis of the vector model, comparing it to convolutional neural networks (CNNs). By comparing the performance of these models, we can use various techniques for this new mission. We evaluated the performance of deep and shallow network structures, comparing the conventional CNN model with deep structure models and trained them on radar imagery before fine-tuning using ImageNet. We compared the results obtained. There may be several reasons why many birds migrate. The primary reason is the availability of food during their migration. If they remain in one place, their food supply during the breeding season will eventually run out. Therefore, they move to areas where food is plentiful to reproduce. During this period, a decrease in food does not affect incoming birds, but it does attract predators who view them as an easy meal. Additionally, birds usually migrate to ensure healthy conditions for raising their offspring. Another reason for migration is changes in climate or weather conditions. If there is a change in these conditions, it may trigger their migration. Severe situations such as predators and diseases can drive them to migrate in order to protect themselves and their descendants. Generally, they migrate to places that are safe and inaccessible to predators.