Cory's shearwater peaked at posture a few days ago!

The same six Cory's shearwater colonies monitored last year by Ana Henriques, whose results are ready to be discussed on her Master thesis, began to be visited this year after Cory´s arrival in mid-March. 99% of the occupied nests last year were also occupied this year.

In Corvo, peak egg laying occurred on June 11 while last year it was on June 4. A week of difference compared to last year. Weather conditions could be the main cause, as we have seen in other places. However, it is too early to have concrete data on how it will be the breeding success of Shearwater this year.

It seems that some couples have trouble finding a hole to nest as you can see from the picture.

A few days after the peak of egg, some depredations have been detected.


We will keep the blog up-to-date on the current breeding season of Corvo Cory's!