Jeff Foott / Spring run-off, Cascade Creek, Yosemite National Park, California
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Sven Zacek / Meandering Loobu River with surrounding meadows and woodlands, aerial view. Lahemaa National Park in Northern Estonia in Laane-Virumaa, Estonia. May 2017.
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Sven Zacek / Honey bee (Apis mellifera), two frozen on pond ice after flying out too early. Valgamaa, Southern Estonia. March.
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Nick Upton / Two Red fox (Vulpes vulpes) cubs playing near the entrance to their den at dusk, Somerset, England, UK, May.
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Donald M. Jones / Northern Pintail (Anas acuta) males flying with female in spring courtship display, Montana
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Pal Hermansen / Avalanche on Gullemot (Uria aalge) nesting cliff on first day birds return to breed. Finnmark, Norway. March.
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Brian Bevan / Long tailed tit (Aegithalos caudates) nest building, Bedfordshire, England, UK, April.
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Hermann Brehm / Blackcap (Sylviya atricapilla) male perched in blossom, Hungary, April.
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Erlend Haarberg / European pine marten (Martes martes) on spring snow. Vauldalen, Norway, April.
Dave Bevan / Female Chaffinch (Fringilla coelebs) bringing moss to nest and incorporating it into nest before flying out of frame, Carmarthenshire, Wales, UK, May.