This observation is a continuation of an earlier post documenting observations made at an active Black Vulture nest. The previous article can be found here: Black Vulture – Nest Update 1.
On this visit to the nest we again found everything proceeding as expected. This is approximately the 25th day of incubation. Very little had changed since our last visit, and the nest and eggs appeared to be in good condition.
Again, we witnessed the adult vulture stand and then manipulate the two eggs with its beak, and this time we got some video of the behavior. This is a common behavior in birds. It is designed to rotate the eggs on a regular schedule and is essential to the healthy development of the embryos inside. After rotating the eggs the adult sat and returned to incubating the clutch.
This observation is continued in this follow up post: Black Vulture – Nest Update 3: Baby!
|Date||–||Mar 17, 2012|
|Time of Day||–||Afternoon|
|Type of Behavior||–||Nesting|