gull`s nest

animal behaviour bird birds blackheaded breeding brooding clutch colony commonality concept conformity congeniality couples different disbelief distrust education feathers female formation fowl guide gull gulls incredulity incubates larus likeness looking male marriage mew mistrust nest nesting offspring open pair pairing plumage quite rearing relating resemblance ridibundus sameness seagull separate tour twins unusual watching water white wild wildlife