Rook Behaviour Guide

The Garden Rook Survey looked at six categories of behaviour: Feeding, Caching, Tolerance, Object Play, Social and Vocalization. 

Rook feeding

What food do you see Rooks eating?
Image by Dr. Nathan Emery

Feeding

Rooks feed on a wide variety of foods, including insects, seeds, vegetables and carrion. They will sometimes share food with their partner, placing it into their bill. We wanted to know what people saw Rooks eating and where they were feeding from

Rook caching

Do Rooks cache and do they come back later
to recover it? Image by Dr. Nathan Emery

Caching

During caching (hiding), food is taken into the bill and deposited into the ground; either directly or into a pre-dug hole. The food is placed into it and then covered over. Birds remember where they hid the food and return to it later. They will protect it from thieves, by hiding behind objects or making false caches (such as stones). We asked people if Rooks were caching and whether they came back to recover the food later. We also wanted to know if they altered their behaviour when being watched by other birds

Rook social

Do you see Rooks together in pairs,
interacting? Image by Dr. Nathan Emery

Social

Rooks are one of the most social crows, forming very large flocks. But Rooks also form life-long partnerships, called pairbonds. Rook pairs spend a lot of time close together, feeding one another, displaying and vocalising together and preening. They also act at the same time, one copying the other’s movements. We wanted to know if Rooks were interacting in pairs and groups, and whether they were aggressive to each other.

Rook tolerance

Do you see Rooks tolerating feeding with
other birds? Image by Dr. Nathan Emery

Tolerance

Rooks, compared to other corvids, are tolerant of other species feeding with them, especially Jackdaws. However, Rooks are large birds that can dominate smaller birds and sometimes displace (take the place) other birds at a bird table.

Rook vocalization

Do the Rooks in your garden make loud
caws? Image by Dr. Nathan Emery

Vocalization

All corvids are noisy birds, who vocalize to tell others about the location and quality of food, the membership of a pairbond, warning about predators and possibly even their name. We wanted to know what vocalizations were occurring and whether they accompanied visual displays.

Rook play

Do you see Rooks using objects, especially
in unusual ways? Image by Dr. Nathan Emery

Object play

Rooks like to play with different objects, including sticks and stones. They will often play tug-of-war with another Rook. Although they don’t use sticks as tools, they do play with them, as well as use them to build nests. We asked if Rooks were using objects, especially in unusual ways.