Officers from the Royal Society for the Protection of Birds in Scotland also suspect a third bird - an adult male - has been killed, although no remains have been found.
The dead eagles were found at a site in Kingussie, Strathspey, by a member of the Raptor Study Group, a network of volunteers which monitors birds of prey.
Poisoned bait
The incident was reported to the RSPB and a police inquiry was launched.
A post-mortem examination found the birds had been poisoned with the highly toxic insecticide Carbofuran.
![[ image: width=150]](/olmedia/420000/images/_422629_goldeneagle150.jpg)
It is believed the male eagle picked up poisoned bait and carried it back to the nest where it was eaten by the other birds.
Carbofuran has been used in other poisonings and the eagles may have been the victims of the misuse of poisons directed at other birds of prey or wild animals, said an RSPB spokesman.
However, officers were not ruling out the possibility that the bait was deliberately laid for the eagles.
The RSPB said it had been 10 years since two golden eagles from the same nest were found poisoned, the only similar reported incident.
Senior investigation officer for the RSPB in Scotland, Dave Dick, said: "There are 430 pairs of golden eagles all over Scotland. Fortunately this is a rare event."
Charges unlikely
Officers at Northern Constabulary investigating the case say it is now unlikely anyone will be charged over the incident.
As the site where the birds were killed is remote there would have been few, if any, witnesses and the nature of the crime means offenders would be difficult to trace.
Police condemned the poisoning as "utterly irresponsible" and warned that using poisons could also put the public at risk.
Northern Constabulary
Royal Society for the Protection of Birds
The BBC is not responsible for the content of external internet sites.
Toys withdrawn in E.coli health scare
Collins calls it a day for Scots
(From Sport)
Pro-lifers plan shock launch
Death inquiry anaesthetist barred
Bowled over by Lord's
Ministers loosen purse strings
'Delight' at Tunnel court outcome
Derby double swoop fails
(From Sport)
Demands for far-reaching information bill
Gaelic makes sound use of the internet
Trusts 'ignoring' depression advice
BBC Scotland - On Air
'Little change' since poverty pledge
Nine hurt as bus crashes into pub
Teachers' union in pay body challenge
Dental death hearing adjourned
Parliament ponders Royal High flit
Reid quits PR job
Industry misses new trains target
Football and royalty dominate Westminster
The next Battle of Britain
(From Sport)
Man charged with murdering lab technician
Lockerbie trial judges named
Festival award for Ratcatcher