This is a video of a house martin colony in Sevilla, Spain.
Today, a walk from the Hofpolder in Vlietland to bird reserve Starrevaart.
A chiffchaff singing.
The first duck of the day in a canal.
A mallard, the most common species?
No, it is a gadwall.
A buzzard circling overhead.
Two Egyptian geese on the lake bank.
We come to the Meeslouwerpolder, the most beautiful area for birds before a sand corporation made the lake too deep.
The birds then got compensation in Starrevaart, more to the south.
A cuckoo calls. A shelduck flies past.
When we arrive at Starrevaart, over a hundred swifts fly over the shallow lake, accompanied by a few score of house martins, often flying a bit lower, closer to the windy waves of the lake.
It made them look a bit like petrels.
From the hide: two common gulls, tufted ducks, common terns. Black-headed gulls nesting on an island.
On the way back, in the Meeslouwerpolder: barn swallows flying, and a cuckoo calling.
In the Hofpolder, two male pheasants.
And a red admiral butterfly.