About us: We own the Wild Birds Unlimited nature shop in East Lansing, Michigan,
a store that provides a wide variety of supplies to help you enjoy the birdwatching hobby.

This blog was created to answer frequently asked questions & to share nature stories and photographs.
To contribute, email me at bloubird@gmail.com.

Saturday, March 12, 2011

Keep your eyes and ears open for new birds

Invite birds to your yard
As you might imagine, migration takes a toll on the birds. It is not uncommon for birds to lose one-fourth to one-half of their body weight as they migrate thousands of miles. Before the journey north to their breeding grounds birds accumulate fat to help maintain their energy reserves. Sometimes, however, reserves are not enough. That’s where you can help by creating “stopover sites” in your yard with plenty of food, water and shelter.

At this time of year the numbers and variety of birds appearing in your yard can actually change every morning as many small songbirds migrate through the night. Species such as warblers, vireos, orioles, grosbeaks, tanagers, buntings and sparrows all migrate overnight.
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Swainson's ThrushImage via Wikipedia
Some reasons are to avoid the heat of the day, windy conditions, and predators. Many species use the stars in the night sky to guide them, and there is some evidence that, perhaps, magnetic fields at the poles help guide them.

The Griffon Vulture, soaring.Image via Wikipedia

Other large-winged birds such as hawks, eagles, vultures and even pelicans migrate during the day, as they rely on thermals and updrafts to fuel their flight. They are efficient flyers and use very little energy during migration, allowing the wind to fuel their flight.

When you think about migration facts, it is astonishing to learn of the amazing feat that many birds accomplish twice each year as they move between their summer and winter range and back again.
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1 comment:

kathy jane said...

Beautiful pictures..,thanks for the info!