Like humans, birds also migrate. This is a natural phenomenon. Some birds migrate to avoid the climate, whereas some migrate for nesting and some migrate to obtain better food. Despite being a natural phenomenon, the migration of birds is impressive and mind blowing. Here are some amazing examples of bird migration, I suggest that you mark your calendar and prepare to watch the events.

Passerine Bird Migration



If you are in Denmark, you can watch a huge flock of medium size passerine birds in the month of March. A Passerine is a small bird- about 20 centimetres long. They start to assemble in Jutland, Denmark for their mid -April migration. When flocks begin to proceed to another destination they create a phenomenon which Danish call “sort sol” meaning black sun in English.

Butterfly Migration



Some butterflies, in particular, the monarch butterfly, migrate in the month of October every year, but they migrate a little bit earlier if the weather turns cold sooner. A butterfly is a cold blooded creature and cannot handle the cold. The scarcity of food is another reason they have to migrate earlier than usual. Monarch butterflies undergo hibernation during winter and you can see them hanging in the trees in groups in Mexico and California in the USA, where it is warm all year long. In addition, the Painted Lady, Common Buckey, Red Admiral also undergo hibernation. If you are in sub-Saharan Africa, you can see the clouds of Belenois Aurota, which are commonly known as African Caper White in the month of November to mid-February. Their migration route is diverse and their cloud formations reach up to a kilometre into the air.

Bar Headed Geese, (Anser Indicus) Migration


Though most geese (so far 29 species of geese identified) migrate, the bar-headed geese migration is really a miracle of nature. They regularly migrate over the Himalayan mountains, including over Mt. Everest at an altitude of 30,750 feet (9375m) where the air is thin and temperature drops to -60 degrees Fahrenheit.

Snow Geese (Anser Caerulescens)


Snow Geese are a highly companionable flock and have numbers that go into the thousands. Snow Geese breed in the Arctic Tundra and winter in farm lands, lakes and coastal areas of America in the south, south-west and east coasts.

Pied Wheatear (Oenanthe Pleschanka) Migration:


You may wonder how some species of birds make an amazing long-distance migration, and the miles they travel is unbelievable. Their flight equals to three trips to moon and back over the span of its lifetime. Among them Pied Wheatear is one, that travels from the extreme south-east of Europe to Mt. Everest in Nepal. Moving from breeding grounds to wintering ground and back means this bird may travel more than 11,000 miles a year.
Nowadays with the deteriorating climate, the exact date of bird migration is becoming more and more unpredictable and can occur on any date on the calendar. It is possible that you can observe an amazing movement of birds in the air at the time other than specified in this article.