Every year we try to estimate the reproductive success in crab plovers to monitor the status of the species. Therefore we are very much helped with data on the % first-winter birds in a group of crab plovers. When you happen to you see a group of crab plovers and you are able to count the number of adults and first-winter birds, please contact us. First-winter crab plovers are easy to recognize by their spotted crown and hind neck and their greyish mantle. For instance, above picture shows 2 first-winter crab plovers and about 22 adult crab plovers. We are also helped with pictures on groups of crab plovers.
Over the years we banded a large number of birds with colour rings. Please contact us if you have seen a colour-ringed bird in the area.