by Pam Bates
Spring is here and a few Whooping Cranes from the wild flock have arrived on the nesting grounds at Wood Buffalo National Park, (WBNP).
According to Rhona Kindopp, Manager of Resource Conservation, Parks Canada. “they have been hearing and observing a number of spring arrivals in the last week or two and one of their staff members reported seeing (and hearing) 4 whoopers flying as she walked home from the office!”
Kindopp states that they are getting signals from 12 cranes marked with transmitters, and those as of Tuesday morning were coming from North and South Dakota, Kansas and Texas, and central Saskatchewan. So the flock is still spread out along the Central Flyway and heading to WBNP.
Nesting Ground conditions.
Numbers regarding whether precipitation was significantly lower than usual this year aren’t available at this time but Kindopp says that the “snow disappeared very quickly this spring. March is usually our heaviest snow month, but the snow was quickly disappearing by mid-March this year.”
Friends of the Wild Whoopers will publish updates of the nesting ground conditions and any ongoing Whooping Crane chick reproduction and related activities when it is available.
Whooping Cranes nesting information
Whooping cranes usually arrive at WBNP during late April and May after migrating 2,500 miles from Aransas Refuge on the Texas coast. Each nesting pair locates their nesting site which is normally in the same general area as past years. Park records show that several pairs have nested in the same areas for 22 consecutive years. Soon after their arrival on their nesting grounds, they build their nest. Nesting territories of breeding pairs vary in size but average about 1,500 acres. Whooping Cranes guard their territories and nesting neighbors normally locate their nest at least one-half mile away. Vegetation from the local area is normally used for nest construction and they construct their nests in shallow water.
Eggs are usually laid in late April to mid-May. Normally two eggs are laid but occasionally only one and rarely three have been observed in nests. Incubation begins when the first egg is laid. Incubation occurs for about 30 days. Because incubation starts when the first egg is laid, the first chick hatched is a day or two older than the second hatched. This difference in age is substantial and creates problem for the younger chick. It is weaker than the older chick and has difficulty keeping up as the adults move around searching for food. The younger chick often dies due to its weakness. Records indicate that only about 10% to 15% of the second chicks hatched survive.
Importantly, the second egg plays an important role in providing insurance that at least one chick survives. From the time Whoopers begin egg laying until their chicks are a few months old, the family groups remain in their breeding territory. They feed there and don’t move long distances until after their chicks fledge.
Report any sightings
With a few cranes already on the nesting grounds, the majority of the flock is still migrating north. Parks Canada is requesting if you see any whooping cranes, they would love to hear from you! Contact the Park Office at 867-872-7960.
***** FOTWW’s mission is to help preserve and protect the Aransas/Wood Buffalo population of wild whooping cranes and their habitat. *****
Friends of the Wild Whoopers is a nonprofit 501(c)3 organization.