Michaela Strachan says Chris Packham is "a little terrier" when it comes to campaigning.
The 53-year-old TV presenter hosts ‘Springwatch’ alongside the 58-year-old star, and she "admires" her co-star’s "passion" for sticking up for what he believes in.
Chris recently campaigned for Natural England to revoke general licences needed to kill 16 species of "pest birds", and received death threats and even had a pair of dead crows left outside his house.
Michaela told the Daily Express newspaper: "The amount of campaigning he does is phenomenal. He is so passionate about it.
"One of the things with his Asperger’s is he uses it in such a positive way. When Chris gets his teeth into something, he doesn’t let it go. He is a little terrier. And that for a campaigner is fantastic.
"No matter how many things get thrown at him along the way, he carries on forward and that’s what I admire him.
"He uses his convictions in a positive way. In the past five years, he has really stepped up his campaigning and keeps pushing."
The former ‘Really Wild Show’ host also admitted she would love to dance on ‘Strictly Come Dancing’ against Chris, because they love challenging each other.
She said: "Chris wins most of the time. His knowledge is second to none and so if we are doing anything on face, he wins hands down.
"But I would love to do ‘Strictly Come Dancing’ against him. I know I would beat him.
"Singing, performing I know I could.
"Facts – no. I don’t stand a chance. Wildlife is the star of our show and telling stories on ‘Springwatch’ is what I enjoyed."