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Bob Cooper

Hermitage Rd, Calgary, AB, Canada


My first year as a nest box monitor. Under the supervision of Susanne Maidment, a very experienced bander, I was able to capture and band my first male MOBL. I saw him enter his nest box. Susanne said, “Why don’t you try to capture him!: A short, fast run later I blocked the entrance, lifted the lid and captured this VERY calm fellow. Banded him then released him. He flew back to the nest and delivered the spider to one of the young. He held onto this spider for the whole ordeal of capture, band and photo which must have taken 3 or 4 minutes. Love this picture


Nests in boxes

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Species: Mountain Bluebird

MOBL With Spider

MOBL and Spider!

One response to “MOBL with Spider”

  1. Robyn Bailey says:

    Wow, sounds fascinating! Check out our blog post here about all the ways spiders are useful to birds:!

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