19.04.2013 Views

Os Eucaliptos e as Aves da Quinta de São Francisco

Os Eucaliptos e as Aves da Quinta de São Francisco

Os Eucaliptos e as Aves da Quinta de São Francisco

SHOW MORE
SHOW LESS

You also want an ePaper? Increase the reach of your titles

YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.

a quinta e a natureza<br />

a quinta e a natureza<br />

116 the quinta and nature the quinta and nature 117<br />

Curioso e sociável. Assim é o pisco-<strong>de</strong>-peito-ruivo.<br />

Curious and sociable: two words that sum the robin up.<br />

Também esquiva é a fuinha-dos-juncos (Cisticola<br />

juncidis), que prefere manter-se escondi<strong>da</strong> n<strong>as</strong><br />

sebes do extremo Este <strong>da</strong> proprie<strong>da</strong><strong>de</strong>. É uma<br />

pequena ave que habita e se reproduz nos<br />

campos <strong>de</strong> cultivo vizinhos e que po<strong>de</strong> ser<br />

observa<strong>da</strong> quando faz os seus voos ondulantes<br />

acompanhados <strong>de</strong> um canto ritmado.<br />

O cuco (Cuculus canorus) também prefere<br />

ocupar os limites <strong>da</strong> <strong>Quinta</strong>. Este visitante<br />

estival chega em meados <strong>de</strong> Março e regressa<br />

ao Norte <strong>de</strong> África com o fim do Verão. Na<br />

Primavera é frequente ouvir o seu chamamento<br />

característico, po<strong>de</strong>ndo ser escutad<strong>as</strong> vári<strong>as</strong><br />

aves ao mesmo tempo. Machos e fême<strong>as</strong> são<br />

b<strong>as</strong>tante diferentes: enquanto o macho tem<br />

o dorso cinzento a fêmea é arruiva<strong>da</strong>, sendo<br />

o ventre riscado <strong>de</strong> escuro sobre um fundo claro.<br />

O cuco não faz ninho, preferindo par<strong>as</strong>itar a<br />

postura <strong>de</strong> outr<strong>as</strong> espécies, com maior<br />

preferência para <strong>as</strong> alvéol<strong>as</strong> (Motacilla cinerea<br />

e Motacilla alba) e rabirruivos (Phoenicurus<br />

ochruros) — espécies nidificantes na<br />

proprie<strong>da</strong><strong>de</strong>. Durante a época <strong>da</strong> reprodução,<br />

se a fêmea do cuco foi cria<strong>da</strong> por uma alvéola,<br />

vai procurar um ninho <strong>de</strong>ssa espécie para aí<br />

<strong>de</strong>positar o seu ovo. Se a manobra é <strong>de</strong>tecta<strong>da</strong><br />

o ovo é posto fora do ninho, m<strong>as</strong> na maioria d<strong>as</strong><br />

vezes é a cria do cuco que, <strong>de</strong>pois <strong>de</strong> n<strong>as</strong>cer,<br />

expulsa ovos e cri<strong>as</strong>, garantindo um tratamento<br />

exclusivo por parte dos seus «pais adoptivos».<br />

Always slipping away is the fan-tailed warbler<br />

(Cisticola juncidis), which prefers to hi<strong>de</strong> in the<br />

hedges on the property’s E<strong>as</strong>tern boun<strong>da</strong>ries.<br />

This is a small bird that lives and reproduces<br />

in the neighbouring farming land and which<br />

can be seen during its undulating flights<br />

accompanied by its rhythmic singing.<br />

The cuckoo (Cuculus canorus) also prefers to<br />

occupy the boun<strong>da</strong>ries of the <strong>Quinta</strong>. This<br />

summer visitor arrives in the middle of March,<br />

returning to North Africa at the end of the<br />

summer. In the spring, it is common to hear its<br />

characteristic calling sometimes simultaneously<br />

ma<strong>de</strong> by various birds. Males differ very much<br />

from females, in that the male h<strong>as</strong> a grey back<br />

and the female’s is reddish, and the belly h<strong>as</strong> <strong>da</strong>rk<br />

stripes over a light background. The cuckoo does<br />

not build its own nest opting to use those of other<br />

species, preferably those of wagtails (Motacilla<br />

cinerea and Motacilla alba) and black redstarts<br />

(Phoenicurus ochruros), the property’s nidifying<br />

species. During the breeding se<strong>as</strong>on, if the<br />

cuckoo’s female w<strong>as</strong> raised by a wagtail, it will<br />

search for a nest built by this species in which to<br />

lay its egg. However, if this act is <strong>de</strong>tected, then<br />

the egg is laid outsi<strong>de</strong> the nest, but most of the<br />

time it is the cuckoo’s young that, after being<br />

born, expel the eggs and other young,<br />

guaranteeing an exclusive rearing by their<br />

“foster parents”.

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!