Organisers say the project has already seen population boosts for hen harriers, curlews, Orkney voles and other rare and threatened native wildlife.
The Eurasian curlew could be gone in Wales as a "viable breeding species" by 2033 if a 6% annual decline continues, experts warn.The thermal imagine drones spot heat from nests hidden in deep grass and bogs.
Electric fencing, as well as fox and crow culls, can then be used to protect the curlew's chicks."If we don't start doing it now, it's going to be too late," said Tony Cross, an ornithology consultant working with Natural Resources Wales (NRW) on a curlewIt cites habitat loss, farming practices and predation as the main pressures on an estimated breeding population of between 400 and 1,700 birds, down by up to 90% in the past three decades.
He said it would be "horrifying" to lose "that evocative, bubbling call up in the hills", describing it as a "symbol of wilderness".Mr Cross added technology was helping, including a "massive advance" in GPS trackers, which are now small enough to "strap on the back of a curlew".
NRW fitted 15 curlew in Wales with GPS tags in 2022, giving researchers a real-time view of their migration from across Europe to important breeding and wintering areas in Wales.
The most recent data shows seven birds returned to Wales this year - six to breed after wintering in Ireland and one that bred in Sweden but wintered on the Dyfi Estuary near Aberystwyth in Ceredigion.The brothers went to trial in 1993 and admitted to shooting their parents with a pair of shotguns, but they argued they did so out of self-defence after years of emotional, physical and sexual abuse by their father.
Prosecutors argued the brothers methodically planned their parents' murder - as the couple watched TV - so they could inherit their multimillion estate.The case went to a retrial after the jury deadlocked.
In the second trial in 1995, much of the evidence relating to the alleged sexual abuse was not allowed to be presented. A jury found both brothers guilty of first-degree murder and they were sentenced to life in prison without the possibility of parole.There has been renewed public interest in the murders since a Netflix series depicting the events was released in September. And new possible evidence - an alleged letter sent by Erik to another family member that details sex abuse by his father.