Aves

Bullfinch Pyrrhula pyrrhula male

Buzzard Buteo buteo at rest on a branch

American goldfinch Spinus tristis quick sketch on twig with red berries

Canada goose Branta canadensis

Archeopteryx reconstruction

Hand holding a duck egg and a candle to see whether or not the egg is viable as egg becomes translucent

Archeopteryx skeleton

Chaffinch Fringilla coelebs male in amongst grasses

Barn owl Tyto alba peering out from barn rafters

Coal tit Periparus ater perched on a twig covered with lichen including Usnea species

Swallow Hirundo rustica sketch in flight

Black Casqued Hornbill Ceratogymna atrata

Black headed gull Chroicocephalus ridibundus with winter and summer head plumage

Black redstart Phoenicurus ochruros view from behind, head slightly cocked

Blackbird Turdus merula

Blue-tit Parus caeruleus male on a branch

Blue tit Parus caeruleus, Coal tit, Long tailed tit, and great tits in a Scots pine tree with cowslip and snakeshead fritillary growing underneath