Young Sand Martins landing to nest burrow, Finland

afrasia afro eurasia animal construction animal constructions babies baby be hungry behavior behaviors being hungry bird birds brood (eggs) broods (eggs) burrow burrows cavities cavity chick chicks clutch clutches communicate communicating communication (behavior) communications (behavior) continent continental area count counting description descriptions diet pattern diet patterns eastern finland province ec eec entomophagous insect entomophagous insects enumeration enumerations eu eurafrasia eurasia europe european economic community european union exclaim exclaiming exclaims families family finland fledgling front shot front shots front sight front sights front view front views general morphologies general morphology hole holes hunger hungry image and subject individual individuals insectivore (diet) insectivores (diet) iucn iucn red list of threatened species iucn status juvenile juveniles landmass landmasses least concern (iucn) lc least concern species living organism living organisms localisation localization location low risk (iucn) lr migratory species morphologies morphology nest nest (to) nested nesting nests old world organism organisms passeriforme and other passeriformes and others recording recordings reproductive behavior reproductive behaviors reproductive behaviour reproductive behaviours sand martin (riparia riparia) sand martins (riparia riparia) shoting shotings shout shouting shouts small bird small birds smalls social behavior social behaviors social behaviour social behaviours songbird and other songbirds and others sound communication speak speaking species species characteristic species characteristics species particularities species particularity stage of development starvation starving starving man starving men swallow (bird) swallows ue uicn vocal communication wild animal wild animals wild fauna wild faunae young youngs