Which foraging technique is commonly employed by Whimbrels when feeding on firmer sand flats?

Answer

Relying more on surface gleaning or shallower probing

Firm substrates demand more physical force to penetrate, causing the birds to shift their strategy toward gleaning food near the surface or probing less deeply.

Which foraging technique is commonly employed by Whimbrels when feeding on firmer sand flats?
foodbehaviorbirdwhimbrelforaging