American Coot with chick

American Coot chick

White-breasted Nuthatch

White-crowned Sparrow

Yellow-crowned Night-Heron

Belted Kingfisher

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When I was in Santa Cruz, California, I lived often hear the squeak Rubber Ducky Emanating from a small pine Monterey dead outside my window. Sunny in the morning can bring in four or five intelligent little bird on the run long brown hat falls from a nest in a tree hidden in the park nearby. I watched the communal lifestyle of the Pygmy Nuthatch, one of the smallest of the North American poultry cooperative.

Pygmy Nuthatch

Up to 40 percent of the Pygmy Nuthatch in connection with at least one and up to three helpers. These are always male, son or brother of the (mostly) men in the reproductive pair. Helpers were hanging around a year, sometimes two, to help feed the nestlings and incubating female later. Their contribution to improving the chances that babies will fledge from the nest Kleiber, and it also allows adult birds winter in better physical condition.

Cooperation does not end in the fall. Pygmy Nuthatch practices to control body temperature by cold nights. Hordes of them cuddling in bed together to save on heat loss, the researchers have seen as many as 150 out of a single tree!

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See your neighborhood

People often complain about the noise she woke up in the morning, usually an extended family of crows begin their day. American crows are the most common of the cooperative breeding bird in North America. A family unit usually includes a mother and father and "some children" are hatched in the previous year, and can take up to 15 species of birds! They included silly, young, and a son and a daughter of adults. Sometimes these children are to remain with their parents for more than five years. In addition to the nuclear family, groups of crows sometimes extended family members such as grandchildren, brothers, and half-brother of the mother and father. We have also seen crows "accept" the neighbor kids are not used.
A pair of American Crows raise their nestlings are usually supported by the children from the previous year. This drawing of a pair of ravens and two helpers fed nestlings were made based on a photograph of Kevin McGowan.

Once the group on the way to your local family, kids happy to see play together and learn from the older birds. You can use the family feud and fight, war with the neighbors, and most human courtship. If you regularly offer food remains in the vicinity of your bird table, the local crows may spend part of your family start to his right, where you can see them. Here are some actions should be checked, during the season.

March and April: Crows courting and building nests. The same "mother" and father "and they usually stay together as a couple are open all year round, two of the blackest, brightest birds in their group. In the early stages of reproduction, they are usually very close together , the parents of each train, she flew to her flight, boarding and next to her on their branches. If a man end up with her, her father would fly over storm and put himself between them. war and conflict family is at the highest this season, especially when another adult male interested in the courtyard of the mother.

This is also a good time to an age determined. In contrast to adults, usually dull brown instead of glossy yearlings. Her hair looked too broken you may be wondering how they fly.

see, the first season for the implementation of crows sticks. You can usually follow their nest tree, usually near the top of a high needles. You will know when they are near-perfect team, when they get soft lining materials, such as seeing a dog or deer hair. In many areas, crows began building the snow began to melt. Children can get doused in a little while last snow sitting on your team.

April: Tune in a sound, new pitched crow that we whine "sound it makes when the meeting .. Dad and help those who "regularly fly to her with food. After the eggs hatch, Papa and also contributed food to the nestlings. Lady Bird was the only one incubation and brooding the nestlings.

June and July: This is usually the noisiest time of year for the crows. The young birds leave the nest in the trees and although they are not too far from the first. They make loud "begging" calls for her parents and old maids. After a few weeks, the chicks follow their parents, begging, on the ground. You can sometimes look a harried parents tools to eat something (a worm that Roadkill chunks, bread crust, etc.) in their big mouth. Note that the young birds "in the red mouth. This will change to black when they mature.

Juvenile birds spend more time playing. You can see how they struggle or pull each other's tails.

September: In early fall, many crows begin to leave their territories to forage elsewhere. You can become rich in grain fields, coastal resorts and forests columns acorns, beechnuts, and others. Watch especially for youth gangs: the big corporations of the new chicks and yearlings collected food in a neighborhood. This is also the time of the year when the Ravens begin their repertoire of practice. Can a sitting alone on a branch, the juxtaposition of all sorts of funny noises.

Winter: In winter months in latitudes much, everyone was surprised to see huge flocks of crows gathering on the golf course, fields, landfills and other places. These birds are from the far north to spend the winter, and also the local residents. Most people go home for at least part of the day on their territories, but spent time with the large flocks and quarters, too. The bustle of the crow in the poultry industry does include loud, but fun experience for the crow. If you happen to a crow with a wing tag in your view offline, be sure to let biologists at the Cornell Laboratory of birds that Crow! It could have one of the crows us, and we always like to know where the birds of our final. For more information, visit www.birds.cornell.edu / crows / crowinfo.htm.

Andrea Townsend is a member of the doctoral program at Fuller Evolutionary Biology at Cornell Lab of Birds.

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Northern Costa Rica
Cloud forests, volcanoes, and wetlands
August 8, 2010 - August 16, 2010, 9 days & 8 nights

An amazing journey through Birding areas most beautiful scenery and rich bird of northern Costa Rica. We will start in the highland forests around Poas Volcano National Park and has views of the crater of the volcano is not active. Then we will continue to La Paz Waterfall Garden and hummingbird feeders busy banana. The next stop will be two nights in the pristine cloud forest set in lovely Bosque de Paz Lodge. Here we will entertain the bird flies, fruit, corn meal and feeders, as well as flocks of mixed species of cloud forest. From here we continue to the wetlands in Costa Rica Caribbean best, Cano Negro Lake National Park, at the very comfortable in Cano Negro Natural Lodge. Birds seem to be everywhere and boating on Lake Cano Negro is one of the highlights of any tour Tropical Birding. Cano Negro is a great area for night birds, including several species of owls and both impressive and often Potoos Great. We will complete the tour with two nights at area scenery in all of Costa Rica, Arenal Volcano. Our house is the Arenal Observatory Lodge, delicate safely located near the active volcano, offers amazing views of the volcano's fireworks at night. The whole area is surrounded by tropical forest beautiful foothills of the Caribbean. While here we will enjoy the hummingbirds in the garden, tanagers and oropendolas on feeders, the trail leads to many tropical forests, and the Arenal Hanging Bridges, with its suspension bridges through the cockpit. Our last night will be near the airport at Orquideas Inn with its gardens and good food. Whether it is a list of impressive birds, comfortable accommodation, or the beautiful scenery you are looking for, this tour has it all. Ernesto Carman will be your leader. Combine this tour with Rancho Naturalista tour that immediately in front of it, and save $ 200 total fee for visit two.

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