Heather Angel / Honey bee (Apis mellifera) forages on pollen in Apple (Malus domestica) flower, collecting pollen in pollen basket. In garden, Surrey, England, UK. May.

Loic Poidevin / Eurasian bullfinch (Pyrrhula pyrrhula) male on a branch feeding on Rowan (Sorbus aucuparia) berries, Leon, Spain, February.

Loic Poidevin / Eurasian bullfinch (Pyrrhula pyrrhula) male on a branch feeding on Rowan (Sorbus aucuparia) berries, Leon, Spain, February.

Marie Read / Baltimore oriole (Icterus galbula) male perched in pear (Pyrus sp.) blossom, eastern redbud in background, New York, USA. May.

Kerstin Hinze / Juvenile Forest dormouse (Dryomys nitedula) on a Rowan ash (Sorbus aucuparia) branch, with berries, Captive, occurs in Eastern Europe and Western Asia.

Pascal Pittorino / Mediterranean tree frogs (Hyla meridionalis) mating on a branch of Quince tree (Cydonia oblonga) Var, Provence, France, April.

Marie Read / Baltimore oriole (Icterus galbula) male singing in spring, perched on Pear blossom (Pyrus sp.) flowers, New York, USA May.

Ernie Janes / Conference Pear tree (Pyrus communis) growing against wall in garden, UK

Shin Yoshino / Asian Pear (Pyrus pyrifolia) tree with bare branches in winter, Japan. Sequence 4 of 4

Nigel Cattlin / Pear leaf blister mite (Eriophyes pyri) damage to Pear (Pyrus sp) leaves. Berkshire, England, UK. May.

Nigel Cattlin / Pear leaf blister mite (Eriophyes pyri) damage to Pear (Pyrus sp) leaves and young fruit. Berkshire, England, UK. May.

Nigel Cattlin / Apples (Malus domestica) with scab caused by Ascomycetes fungus (Venturia inaequalis). Berkshire, England, UK. September.