a variable oystercatcher`s egg lies in a shallow scrape in the sand

aves avian bare beach beak bird birds breed breeding camoflague camouflage catcher coastal collection cycle delicate driftwood egg eggs foreshore generation haematopodidae hidden life minimal mottled native nest nesting new next oyster oystercatcher sand sandy scrape sea shells shore shorebird speckled spots stones survival three variable vulnerable wader watching zealand