On Sunday, 3rd of May at midmorning I filmed this group of woodstorks climbing on to thermal currents to begin their journey to the north. I immediatley associated the scene to their migration. It is by late summer (and this year they stayed till the very end) when these big flocks can be seen. This is not the case when they arrive here possibly because they separate previously, but when they leave they gather in certain places and if you are at the right moment and place you can enjoy this magnificent view.

This group was ascending the thermal current, which means they overnighted at the reserve. There were approximately 75 individuals. I suppose they must have arrived on Friday and had to stay due to the rain. On Sunday, instead, the day was beautiful. At mid morning they took off with the aid of thermal currents. I only saw this group, but luckily from another position Daniel and Martín observed another group flying from the south and tell us these two groups joined.

Daniel's photos were taken at 10:26. This is the group flying from the south. Almost 65 individuals total this group.
An hour later they saw a bigger flock also flying from the south. 180 individuals formed this group and there were six stowaway roseate spoonbills

Photos taken at 11:39.

But this is not the end of the story. On Monday Diego Bastías photographed another group which was ascending the thermal current. This means there must have been more bouts of woodstorks and this group descended here to overnight.

320 woodstorks either passed or stayed at the reserve during migration as is accounted for by the photos, but there may have been more. This fact makes us evaluate the importance of this reserve. Not only for the life it supports and we daily see but for those that use it as a stopover to rest or feed. The woodstork is one these examples. It does not stay long at the reserve but overnights here in their migration journey. Get to know and spread the potentialities of the reserve helps to reinforce its value.