Grey Heron (90–100cm, 36–40in)

The Grey Heron is a distinctive avian species, boasting the largest size amongst common land birds in Britain and an extensive distribution across Europe. This elegant bird can be observed in a variety of aquatic habitats, ranging from lakes, rivers, marshes, and estuaries to garden ponds, where its fish-based diet may not be welcomed by some. Grey Herons are characterized by their tall, slender frame, heavy dagger-like bill, and grey, black, and white plumage. When fishing, they present an impressive sight with their fully extended neck and remarkable stealth. In flight, Grey Herons' size becomes apparent, as they appear as a large greyish bird flying slowly on bowed wings with a series of deep wingbeats, hunched neck, and trailing long legs. Even at a considerable distance, the black flank line and blackish underwing are easily recognizable features.

The adult bird displays a striking appearance, characterized by a white head with two broad black stripes that extend into slim black head plumes during the breeding season. The neck is white, with pale grey wash on the sides and black flecks that run from the throat to the belly. Breeding birds also feature shaggy plumes on the lower breast. The flanks are black, with white on the belly that extends to the vent, and a dark undertail. The upperparts are blue-grey, with a black 'shoulder' and pale silvery plumes over the wing. The bird's bill is orange-yellow, while the eye and legs are yellowish.

The physical characteristics of juvenile Grey Herons differ from those of adults. They appear more robust and have a darker coloration, typically grey but occasionally brown. Unlike adults, juveniles lack the distinct white and black badger stripes on their head. Instead, their forehead, crown, and nape are dark grey, with only a white throat providing contrast. Their upperparts and underparts are generally dull grey and lack plumes and shoulder patches. The bill is brownish-grey with a yellowish-grey lower mandible, while the eye is a dull yellow and the legs are olive in color.

Grey Herons are known for emitting a distinctive loud call, which can be described as a hard 'frank' or 'krank' while in flight.

These birds are known to nest in communities, often choosing trees in wooded areas as their preferred breeding site. However, they have also been known to breed in reedbeds and, on rare occasions, on cliffs. The nesting process typically begins in late January, with the birds engaging in elaborate display rituals and building their nests using twigs and sticks. During this time, they can be observed engaging in bill-snapping and calling to one another.

The juvenile Grey Heron is depicted in a poised stance, ready to strike its prey.

This bird is a striking sight when standing calmly on a boulder in the middle of a river, its feathers gently fluttering in the breeze as it surveys its surroundings.

Despite their impressive appearance, Grey Herons can be easily overlooked when sleeping, especially if they are nestled in a reedbed. They appear unperturbed by disturbances and can remain huddled for extended periods.