Satellite photos suggest Russia's artillery losses are higher than reported

Russia has removed around half of its artillery from its storage bases since the start of the invasion of Ukraine. This suggests a high rate of attrition of its equipment, according to satellite imagery cited by open-source intelligence (OSINT) analysts. Newsweek reported this.
During the war started by its leader Vladimir Putin, Russia has lost huge numbers of troops as well as equipment. There are differing estimates of both from Kyiv and its allies, especially since the start of Moscow's offensive on Avdiivka, Donetsk oblast. Both Moscow and Kyiv are tight-lipped about their own losses, rarely revealing how much equipment has been destroyed.
As of February 5, Russia had lost 666 pieces of Self-Propelled Artillery and 340 pieces of Towed Artillery, according to Oryx. The website tracks losses using photo or video evidence, albeit with the caveat that the amount of equipment destroyed is "significantly higher."
However, data from the OSINT analysts High_Marsed and Cover Cabal, posted on X, showed that that Moscow's forces have been drawing on large numbers of both forms of equipment from its stocks, due to high losses and barrel wear.
The analysts' tally posted on February 3 found that, before the war, Russia had 4,450 Self-Propelled Artilleries in storage at its most-important bases, but this has dwindled by 1,489 to 2,961. Their estimate of towed artillery had declined from 14,631 before the invasion to 6,786, a decrease of 7,845.