In a space that corresponds to the largest forest area of ​​the Municipality of Oeiras, there are many and varied species of birds that can be observed in the  Centro Desportivo Nacional do Jamor (CDNJ), between resident birds and those that are in the zone only for brief periods.

As for the avifauna that lives permanently or uses this area to nest and feed, more than 100 species of birds have been identified in the CDNJ zone by several avifauna observers. Many of these birds are seasonal, and can be divided into several groups according to the period in which they are observed and by their abundance in this place.

There are resident birds, which are present throughout the year, their numbers being reinforced in summer or winter with migratory birds; the wintering birds, which are in Portugal in the winter, almost always coming from northern Europe and the summer birds that are here in the summer. The latter come from warmer climates, and usually nest in this area.

There are also birds from migratory passages, which pass through in the spring or autumn, but do not spend the winter or snow here in the summer, migrating through the use of geographical corridors, which may differ from year to year due to climatic conditions of each year (depending on the wind, rain, etc.). A good example is the European pied flycatcher that is not a resident, which at the springtime there are no records in the Jamor, which is known, but which in the autumn is relatively easy to find along the river Jamor.

Below is the list of birds that can be seen in the CDNJ, some are abundant and others are more scarce, depending also on the time of year and climate:

1. Birds all year round in greater or lesser quantity (attention that some depends on the years)

Mallard - Anas platyrhynchos

Rock dove, Rock pigeon, or Common pigeon - Columba livia

Common wood pigeon - Columba palumbus

Eurasian collared dove - Streptopelia decaocto

Common moorhen - Gallinula chloropus

Common buzzard - Buteo buteo

Rose-ringed parakeet - Psittacula krameri

Eurasian jay - Garrulus glandarius

Coal tit - Periparus ater

Eurasian blue tit - Cyanistes caeruleus

Great tit - Parus major

Long-tailed tit or Long-tailed bushtit - Aegithalos caudatus (lesser and more scarce)

Short-toed treecreeper - Certhia brachydactyla

Eurasian wren - Troglodytes troglodytes

Common firecrest - Regulus ignicapilla

Cetti's warbler - Cettia cetti (not to be confused with common nightingale)

Zitting cisticola or Streaked Fantail Warbler - Cisticola juncidis

Sardinian warbler - Sylvia melanocephala

Eurasian blackcap - Sylvia atricapilla

European robin - Erithacus rubecula

Black redstart - Phoenicurus ochrurus

Common blackbird - Turdus merula

Spotless starling - Sturnus unicolor

Grey wagtail - Motacilla cinerea (in small quantities)

White wagtail - Motacilla alba

European greenfinch - Chloris chloris

European goldfinch or Goldfinch - Carduelis carduelis

European serin or just Serin - Serinus serinus

House sparrow - Passer domesticus

Common waxbill - Estrilda astrild

Grey heron - Ardea cinerea (sparse)

Little egret - Egretta garzetta (sparse)

Common kingfisher - Alcedo atthis (in small quantities)

Common kestrel - Falco tinnunculus

Great spotted woodpecker - Dendrocopos major (in small quantities)

Red-legged partridge - Alectoris rufa

2. Predominantly wintering birds (August to May, some in migratory passages)

Ruddy turnstone - Arenaria interpres

Common sandpiper - Actitis hypoleucos

Black-headed gull - Chroicocephalus ridibundus

Mediterranean gull - Larus melanocephalus

Common gull - Larus canus

Great cormorant - Phalacrocorax carbo

Common chiffchaff - Phylloscopus collybita

Meadow pipit - Anthus pratensis

Common chaffinch - Fringilla coelebs

3. Birds in migratory passage (spring months or autumn months)

Willow warbler - Phylloscopus trochilus (both passages, more quantity in the autumnal passage)

Spotted flycatcher - Muscicapa striata (autumnal passage)

European pied flycatcher - Ficedula hypoleuca (autumnal passage)

Western yellow wagtail - Motacilla flava

Eurasian siskin - Carduelis spinus (in few quantities depending on the year)

Song thrush - Turdus philomelos (in small quantity)

4. Predominantly summer birds (from April to September)

European turtle dove - Streptopelia turtur

Common swift - Apus apus

Pallid swift - Apus pallidus (in small quantities)

Barn swallow - Hirundo rustica

Red-rumped swallow - Cecropis daurica

Common house martin - Delichom urbicum

A special thank you to Márcio Cachapela, who made the photographs available to us and made this compilation possible.