A falcon was discovered near the Gaza border on Monday with strings attached that contained flammable material.
The falcon was found dead, hanging by the attached string from a burned tree near the Nahal Habesor riverbed.
It was not immediately clear if the bird was launched from Gaza to spark fires in Israel, as Gazans have done hundreds of time in recent weeks with kites and balloons, or if the predatory animal attempted to attack a balloon or kite carrying an incendiary device and became ensnared in its attached strings.
The falcon was found on a day when firefighters battled 15 separate fires started by Gazan kites and balloons in the border region.
Nature and Parks Authority officials who examined the bird said it wore a harness, suggesting it was a trained hunting bird, and strengthening speculation that it was deliberately sent to start fires, the Ynet news site reported.
The falcon is a common bird in Israel, and regularly attacks other birds in the air.
If it was deliberately sent to Israel from Gaza to start fires, it would mark the first time Gazans have used an animal to start such fires.
Israel has accused Gazans of using kites, balloons, drones and helium-filled condoms to launch incendiary devices into Israel.
Hundreds of fires have been started in southern Israel by the devices, burning thousands of acres of forest, farmland and brush over the past two months.