egg theft/disposal

Gidday all,
Saw three Australian Ravens being chased off by Bush Stone-curlew today in Townsville Common Cons. Park. Found two curlew eggs nearby. Ravens returned soon after and flew off with eggs. And seemingly swallowed them in flight as I tried in vain to focus and photograph the action. Certainly, two thorough sweeps of newly burned grass area (and therefore mostly charred open space) revealed no trace whatsoever of eggs. The ravens stayed in area, foraging on ground and calling from Leichhardt tree, which escaped with lower singeing from fire. Has anyone seen similar size birds swallow similar size eggs in flight?
Tony Ashton

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