Please report new Osprey nests to Vanessa Greene at Osprey.mn@gmail.com Volunteer to monitor a nest!
Thursday, April 12, 2012
Interesting few days. Some nests are eerily quiet and empty...ones that have had long term residents. Some people expected the Ospreys to return early due to the warm spring, but Ospreys migrate to South and Central America for the winter and have no idea what the weather is like here. They leave on their spring migration as a response to the amount of daylight. Of course they did not run into snow and frozen lakes south of here so I expected we might see them a few days early, but not weeks early. Many returned at the normal time. The empty nests may be a result of something else...and that makes me continue this research. Today I was observing two nests that had new males on them. Different behaviors on each of them. On one nest I noticed that the male was very calm and not defensive...sitting very close to the female, side by side touching their wings, basking in the warm afternoon sunshine and snoozing a bit. I wondered if he was from a nest that had a lot of human activity because he was not concerned about my presence at all. I read his band and, yes, he was from a nest that is near an elementary school. The other pair I observed were having a little more difficulty with their new partnership. The male had a fish and did not offer it to the female...he went to a tree to eat and ignored her. When several other Ospreys showed up and were flying and chirping above, he flew up and started a sky dance, which is a courtship behavior, as if to say "she is mine" to the other ospreys...and perhaps to say to her, "pick me". He still did not share his fish. He later went and got another fish...ate part of it and then went to the nest to give it to her and she immediately flew away, rejecting his offer. We will see what happens.
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