weeks to months
The duration of a journey for sandpipers and slender-billed gulls can vary depending on their specific migration routes and destinations. Sandpipers and slender-billed gulls are migratory birds that travel significant distances during their annual migrations. The time it takes for them to complete their journeys can vary based on several factors, including the distance they need to cover, weather conditions, and stopovers for feeding and rest.
Sandpipers, for example, may undertake long migrations from their breeding grounds in the Arctic to their wintering areas in warmer regions. These journeys can span thousands of miles, and the time it takes to complete the journey depends on the specific species of sandpiper and the route they take.
Similarly, slender-billed gulls migrate seasonally, with some populations moving between breeding and wintering areas. The duration of their journeys can also vary depending on the distance they need to travel.
In general, these migratory journeys can take weeks to months, with stopovers at key locations for feeding and rest. The timing and duration of migration are essential for the survival and reproduction of these birds. To determine the specific duration of a particular migration, one would need to consider the species, the starting and ending points of the journey, and other environmental factors.