Razorbill beat guillemots to first egg of season

Mark Newell from CEH (Centre for Ecology and Hydrology, who carry out much of the seabird monitoring on the Isle of May) writes:

raz 2

The razorbill with the first recorded razorbill egg of the season

Easter may be over and temperatures are a little cooler than they were over the weekend but the breeding season is steadily progressing. Following on from the first eggs from Great Black-backed Gulls, Puffins and Eider in the last few days, Easter Monday (21st) gave us the first Razorbill egg. The Centre for Ecology & Hydrology have been recording the first egg dates of several species on the Isle of May for over 30 years and what makes this first Razorbill egg unusual is the fact that it is before the first Guillemot egg. On average the first Razorbill egg occurs 5 days after the first guillemot and there have only been three other years where Razorbills have laid first (all in the last 12 years). The first Guillemot egg was found today on Greenface across from one of the spectacular viewpoints, on what is the average first egg date for Guillemots. From this we would expect the peak of laying to be in about 10 days with chicks hatching a month later. Just as one Swallow doesn’t make a summer, one auk egg doesn’t necessarily make a good breeding season however with laying commencing at the time we would expect or slightly earlier in some species then hopefully the seabirds will go on to have a productive year.

So come out to the Universe of the May, it is incredible.

raz 1

The guillemot on the first recorded guillemot egg of the season

This entry was posted in Uncategorized. Bookmark the permalink.