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Home Life of Birds
The eggs. The most common colors found among birds’ eggs arc white and various shades of brown and blue. It seems to be a general rule that eggs which are laid in cavities, where they are not easily seen, like the woodpeckers’, are white; and those which are laid in more exposed positions take on some brighter color. But there are exceptions to these generalizations. Some eggs are of a uniform color, while others are spotted or mottled. The number of eggs laid varies from one to twenty. For most of our common land-birds the number ranges from four to six.
Incubation. The period of incubation ranges from twelve days for a small bird like the chipping sparro to twenty-eight days for a large bird like the osprey. The larger the egg, the longer the time usually required for incubation. The work of incubation is done chiefly by the female, but in sonic cases the male may help, or the male may feed the female on the nest. While the female is incubating the eggs, one of the chief duties of the male is to drive away any intruding birds or anj7nk that may come within
a certain distance.
Condition of young at birth. For the most part the lower forms of birds are precocial, the young being ready to walk when first hatched; the higher forms are altricial, the young being helpless and requiring the care of the parents. This constant care of the young is a sign of advancement among all animals. Probably the first birds were all precocial and some gradually evolved the altricial habit.
Time in nest. The time that the altricial birds remain in the nest varies with the size of the birds. In general the larger birds remain longer in the nest than do the smaller birds. In the case of the song sparrow, the young may leave the nest at the end of a week, while some birds may remain several months in the nest; but for most of our common birds the time averages about two weeks.
The following tables give in brief form some facts regarding the nesting-habits of a few birds. These figures represent observations made of a particular pair of birds. Observations on other birds of the same species would doubtless give different figures. But these results give at least an approximate idea of the time involved in these various activities. The incompleteness of this table suggests how many things are yet to be learned about the habits of our common birds.
The work of the parent birds in rearing their young consists chiefly in three activities: feeding the young, cleaning the nest, and brooding the young.
bird nests - Yahoo! News Search Results
bird nests - Yahoo! News Search Results
Edible bird's nests sought from China to Silicon Valley
Nests made from the saliva of birds found in Asia, sometimes referred to as the "caviar of the East," is a multibillion-dollar industry. Selling for as much as $5,000 a pound, bird's nest is high in protein and, like tofu, absorbs the flavors of other food.
Good earnings from bird's nests
JOHOR BARU: THE high demand for bird's nests in Johor has boosted the industry to RM39.5 million last year, said Agriculture and Agro-based Industries committee chairman Datuk Abd Aziz Kaprawi.
Swedish police looking into bird egg theft
SUNDSVALL, Sweden, Jan. 23 (UPI) -- Police in Sweden are investigating allegations a man stole rare bird eggs and nests to sell to collectors worldwide.
Bird's-eye view: Christmas count doubles 2010 tally
More than 24,000 birds were counted in Franklin County during the 111th Christmas Bird Count (CBC) on December 29. The 24,479 individual birds counted in the county?s count circle, which includes St. Vincent Island, was more than double the 10,261...
Landfill hazers battle with eagles, ravens, gulls
The bald eagle may be America's bird, but as the employees of Anchorage's Municipal Landfill know, it is also an incorrigible trash hound. Each winter, 200 to 300 eagles take up residence at the main city landfill off Hiland Road in Eagle River.
Swedish 'egg snatcher' sought by Interpol
Police in northern Sweden recently received a tip-off from Interpol in the UK about a Swedish resident suspected of snatching rare bird's eggs and nests to sell to collectors worldwide.
One cool (or crazy) thing: Tower of Nests
The award-winning design for a high-rise building envisions a new harmony between humans and nature in the megalopolis of the future. It attempts to address problems that come with greater urban density.
Trust gives $11,000 to Doc mohua programme
The Mohua Charitable Trust has donated $11,000 to a Wanaka-based programme to save the mohua, a rare native bird, in the Mt Aspiring National Park. read more
Albatross that may have stowed away on ship released at sea
Call it the case of the stowaway seabird. A man was driving down a Los Angeles street Friday when onlookers flagged him down, alerting him to an enormous bird that had hitched a ride in the back of his pickup...
Summit County: Birds of winter
?Extremophile? rosy finches thrive where other birds perish *Editor?s note: Have a bird question? Send it our way or leave it in the comment box and we?ll try and get it answered for you. By Max Wood SUMMIT COUNTY ? Birding in the winter in Summit County, Colorado may fail to puff up your year [...]
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