Great Tit

## Appearance

The Great tit is a widespread and common songbird throughout Europe, the Middle East, Central Asia, and east across the Palearctic to the Amur River, south to parts of North Africa. It is a distinctive bird with a black head and neck, prominent white cheeks, olive upperparts, and yellow underparts, with some variation amongst the numerous subspecies. The Great tit has adapted well to human changes in the environment and is a common and familiar bird in urban parks and gardens. It is also an important study species in ornithology.

## Distribution

Great tits have a wide distribution across much of Eurasia. They can be found across all of Europe except for Iceland and northern Scandinavia, including numerous Mediterranean islands. In North Africa, they live in Morocco, Algeria, and Tunisia. They also occur across the Middle East, and parts of Central Asia from northern Iran and Afghanistan to Mongolia, as well as across northern Asia from the Urals as far east as northern China and the Amur Valley. Great tits inhabit open deciduous woodland, mixed forests, forest edges, and gardens. In northern Siberia, they live in boreal taiga. In North Africa, they prefer oak forests as well as stands of Atlas cedar and even palm groves. In the east of their range, Great tits favor riverine willow and birch forest, as well as low scrubland and oases.

## Behavior

Great tits are generally not migratory. Pairs will usually remain near or in their territory year-round, even in the northern parts of their range. Young birds will disperse from their parents' territory, but usually not far. Great tits are gregarious birds that are active during the day and roost in flocks at night. They often forage on the ground and along with other tits, readily join winter mixed-species foraging flocks. Great tits are vocal birds and have up to 40 types of calls and songs. The calls are generally the same between the sexes, but the male is much more vocal and the female rarely calls. Soft single notes such as "pit", "spick", or "chit" are used as contact calls. A loud "tink" is used by adult males as an alarm or in territorial disputes. One of the most familiar is a "teacher, teacher", often likened to a squeaky wheelbarrow wheel, which is usually used in proclaiming ownership of a territory.

## Diet

Great tits are carnivores and herbivores. In the summer, they are primarily insectivorous, feeding on insects and spiders including cockroaches, grasshoppers and crickets, lacewings, earwigs, bugs, ants, flies, caddisflies, beetles, scorpionflies, harvestmen, bees and wasps, snails, and woodlice. In autumn and winter, Great tits add berries and seeds to their diet. Where it is available they will readily take table scraps, peanuts, and sunflower seeds from bird tables.

## Reproduction

Great tits are monogamous breeders; they form pairs and establish breeding territories. These territories are established in late January and defense begins in late winter or early spring. The time of breeding varies by a number of factors, most importantly location. Most breeding occurs between January and September; in Europe, the breeding season usually begins after March. In Israel, it may occur from October to December. Great tits nest in a cavity that is usually inside a tree, although occasionally in a wall or rock face, and they will readily take to nest boxes. In most years the pair will raise two broods. The nest inside the cavity is built by the female and is made of plant fibers, grasses, moss, hair, wool, and feathers. The number in the clutch is usually 5 to 12 eggs. The eggs are white with red spots. The female undertakes all incubation duties and is fed by the male during this time. The bird is a close sitter, hissing when disturbed. The incubation period is between 12 and 15 days. The chicks are hatched unfeathered and blind. They are fed by both parents, usually receiving 6 to 7 g (0.21-0.25 oz) of food a day. The chicks stay in the nest for 16-22 days and become independent of the parents 8 days after fledging. Feeding of the fledgling may continue after independence; it may last up to 25 days in chicks from the first brood and as long as 50 days in the second brood.

## Population

### Population threats

The Great tit doesn't face major threats at present and is not considered to be threatened. However, the species may suffer from habitat loss and changes in climate which may lead to lowered reproductive success.

### Population number

According to the IUCN Red List, the total population size of the Great tit is around 433,300,000-703,300,000 mature individuals. In Europe, the breeding population consists of 65,100,000-106,000,000 pairs, which equates to 130,000,000-211,000,000 mature individuals. Currently, this species is classified as Least Concern (LC) on the IUCN Red List and its numbers today are increasing.

## Fun Facts for Kids

In former times, English folk considered the "saw-sharpening" call of the Great tit to be a foretelling of rain.

When Great tits capture large food items, such as large prey or seeds, they dealt it with by "hold-hammering"; the item is held with one or both feet and then struck with the bill until it is ready to eat. Using this method, a Great tit can get into a hazelnut in about 20 minutes.

When feeding their chicks, Great tits will hammer off the heads of large insects to make them easier to consume. They will also remove the gut from caterpillars so that the tannins in the gut will not retard the chick's growth.

During winter when other food is scarce, Great tits were may kill, and eating the brains of hibernating pipistrelle bats. This is the first time a songbird has been recorded preying on bats.

Great tits are very intelligent birds. In England, they learned to break the foil caps of milk bottles delivered at the doorstep of homes to obtain the cream at the top. This behavior, first noted in 1921, spread rapidly in the next two decades.

Great tits sometimes use tools. They may use a conifer needle in the bill to extract larvae from a hole in a tree.

The Great tit is a popular garden bird due to its acrobatic performances when feeding on nuts or seeds.