Birds Know Who is Related to Them

Zoology shows men scorn their stepsons, like birds.
It is common knowledge that cuckoos "dump" their eggs in other birds' nests to put the responsibility of bringing up cuckoo chicks to strangers. It appeared that birds could not tell the difference between there own offspring and cuckoos. However, this belief has been proved wrong by research on the southern pied babbler of Africa.
southern pied babbler
This bird lives in a group of up to 14 individuals. It has been observed that the dominant male will push out unrelated subordinate males. Females did not show any favor. It is purely a male thing. The prime behavior of the birds is the practice of male birds helping to raise the young of other mating pairs. They obviously remember who is related to whom, particularly in regard to their own young.

The males thrown out of groups do not fair well in life generally. Their health suffers. They become skinny and remain that way. Seldom do they become dominant males. There could be a message for humans here: perhaps men who have children with women who already have children by other men treat their own offspring better and scorn their stepchildren.
 
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Cat Eager for Food - clever

Comical cat cannot wait for food.
Canned food for hungry cat
"Just give me the can, will you!"
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HUNGRY CAT
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Gunshot Residue Identifies the Cartridge Used - Physics

New technology pins criminals to gun crimes.>
It is getting more difficult for criminals to get away with breaking the law. If a gun is used it is now possible to match the gunshot residue to specific bullet cartridges. A criminal will probably keep some unused cartridges at his/her home. The shooter will have residue on this body and the gun anyway.
Gun being fired
Each batch of bullets has a different chemical makeup. Differing amounts of glass fragments is the main difference. Sensitive High Resolution Ion Microprobe (SHRIMP) and Time of Flight Secondary Ion Mass Spectrometry (ToF-SIMS) provide extremely detailed analysis of gunshot residue.

When a gun is fired, residue to splattered everywhere, on the shooter, the victim and in the wound itself. There is no way of destroying the evidence. Residue can be matched with bullets at a certainty of 99 per cent. It is possible that some innocent people jailed for crimes will be shown to be not guilty with the used of the new technology.
 
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Dog Amused by Tennis Ball Pic

Dog captivated by work of art amusing.
"Now that is a work of art!"
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GREAT TENNIS BALL
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