A third egg appeared in the nest on March 10th three days after the second egg and six days after the first egg. There could still be one more on the way. She has been incubating pretty steadily so the eggs that are already laid have been developing and moving toward hatch. Incubation takes about 28-32 days so the first egg should hatch sometime towards the end of the first week of April. Chicks that hatch first will have a size advantage over their siblings.
PHOTOS: See 3rd Egg in Nest!
VIDEO: Watch Raptor Cam LIVE
SLIDESHOWS: Photos from the Nest
Where is the male?
The male is still around. The female does most of the incubation but the male can spot her once in awhile. He does periodically brig her food. Oftentimes you can tell right before he comes in because you can see her calling to him and clearly watching something flying by. She can also do some hunting for herself as well. The amount of time that the male spends incubating the eggs varied by individual pairs of birds and by species. I have peregrines that I monitor where the male does virtually 50% of the feeding.
Can we get sound for Raptor cam?
We actually tried to do get sound this year. We were ready to purchase a microphone but there were some delays and by the time we were ready the hawks were already spending a lot of time at the nest. We did not want to cause a disturbance on the fire escape the might cause them to move their nesting location so we decided to wait unitl next year.
How long to the young stay in the nest?
Typically the young will spend 45-46 days in the nest before taking their first flights. Birds develop incredibly quickly relative to mammals. The following is some information on other species:
Species Incubation Period Time as nestling
Rufous Hummingbird 12-14 Days 20 Days
Bewicks Wren 12-14 Days 14 Days
Vaux Swift 18-20 Days 28 Days
Robin 12-14 Days 14 days
Bald Eagle 34-36 Days 70-98 Days
Great Blue Heron 28 Days 56-60 Days
Mallard 28-30 Days Able to self feed and walk within hours of hatching
READ MORE: Raptor Cam Blog